This principle is harnessed in QKD by ultimately transmitting the key as photons within fiber channels. Any attempt to intercept the key exchange will disrupt the message and notify the receiver. “If somebody tries to observe that photon as it passes along the length of fiber,” explains John Bruggeman, consulting CISO at CBTS, “that observation will break the quantum state of the photon, and the receiver will go, ‘Oops, that key is compromised. I can’t use it. Send me another one.’”While this basic approach is secure, it is neither efficient nor cheap. “Quantum key distribution is an expensive solution for people that have really sensitive information,” continues Bruggeman. “So, think military primarily, and some government agencies where nuclear weapons and national security are involved.”Current implementations tend to use available dark fiber that still has leasing costs. If no dark fiber is available, new fiber would be required, potentially at high cost. Furthermore, a photon can reliably travel just 50 to 60 miles before signal attenuation and dispersion, without the use of amplifiers. This can be increased to hundreds of miles by the insertion of amplifiers, which requires cutting and splicing the fiber to allow the amplifier to sit in the optical stream. While the location of amplifiers is always heavily secured, their presence once again means that provable security is lost.Nor are current methods of generating the photons very efficient. NIST has been working on ways to “generate single photonswith near-perfect efficiency and on demand.” The process involves using ‘quantum dots’ which essentially emit a single photon when hit by a carefully shaped laser pulse. The emission of these single photons can be controlled.Current methods use faint lasers with filters that block most photons but tend to emit photons at random times rather than on demand. “They are not very efficient because they create significant numbers of multi-photon events and zero-photon events.,” explains NIST. “And they are often not bright enough to meet the needs of emerging quantum technologies.”NIST hasn’t researched single photon production just to aid QKD, but its success will be a great boon for QKD where absolute provable security is a necessity – especially, for example in the government and the military.“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
While this basic approach is secure, it is neither efficient nor cheap. “Quantum key distribution is an expensive solution for people that have really sensitive information,” continues Bruggeman. “So, think military primarily, and some government agencies where nuclear weapons and national security are involved.”Current implementations tend to use available dark fiber that still has leasing costs. If no dark fiber is available, new fiber would be required, potentially at high cost. Furthermore, a photon can reliably travel just 50 to 60 miles before signal attenuation and dispersion, without the use of amplifiers. This can be increased to hundreds of miles by the insertion of amplifiers, which requires cutting and splicing the fiber to allow the amplifier to sit in the optical stream. While the location of amplifiers is always heavily secured, their presence once again means that provable security is lost.Nor are current methods of generating the photons very efficient. NIST has been working on ways to “generate single photonswith near-perfect efficiency and on demand.” The process involves using ‘quantum dots’ which essentially emit a single photon when hit by a carefully shaped laser pulse. The emission of these single photons can be controlled.Current methods use faint lasers with filters that block most photons but tend to emit photons at random times rather than on demand. “They are not very efficient because they create significant numbers of multi-photon events and zero-photon events.,” explains NIST. “And they are often not bright enough to meet the needs of emerging quantum technologies.”NIST hasn’t researched single photon production just to aid QKD, but its success will be a great boon for QKD where absolute provable security is a necessity – especially, for example in the government and the military.“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
Current implementations tend to use available dark fiber that still has leasing costs. If no dark fiber is available, new fiber would be required, potentially at high cost. Furthermore, a photon can reliably travel just 50 to 60 miles before signal attenuation and dispersion, without the use of amplifiers. This can be increased to hundreds of miles by the insertion of amplifiers, which requires cutting and splicing the fiber to allow the amplifier to sit in the optical stream. While the location of amplifiers is always heavily secured, their presence once again means that provable security is lost.Nor are current methods of generating the photons very efficient. NIST has been working on ways to “generate single photonswith near-perfect efficiency and on demand.” The process involves using ‘quantum dots’ which essentially emit a single photon when hit by a carefully shaped laser pulse. The emission of these single photons can be controlled.Current methods use faint lasers with filters that block most photons but tend to emit photons at random times rather than on demand. “They are not very efficient because they create significant numbers of multi-photon events and zero-photon events.,” explains NIST. “And they are often not bright enough to meet the needs of emerging quantum technologies.”NIST hasn’t researched single photon production just to aid QKD, but its success will be a great boon for QKD where absolute provable security is a necessity – especially, for example in the government and the military.“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
Nor are current methods of generating the photons very efficient. NIST has been working on ways to “generate single photonswith near-perfect efficiency and on demand.” The process involves using ‘quantum dots’ which essentially emit a single photon when hit by a carefully shaped laser pulse. The emission of these single photons can be controlled.Current methods use faint lasers with filters that block most photons but tend to emit photons at random times rather than on demand. “They are not very efficient because they create significant numbers of multi-photon events and zero-photon events.,” explains NIST. “And they are often not bright enough to meet the needs of emerging quantum technologies.”NIST hasn’t researched single photon production just to aid QKD, but its success will be a great boon for QKD where absolute provable security is a necessity – especially, for example in the government and the military.“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
Current methods use faint lasers with filters that block most photons but tend to emit photons at random times rather than on demand. “They are not very efficient because they create significant numbers of multi-photon events and zero-photon events.,” explains NIST. “And they are often not bright enough to meet the needs of emerging quantum technologies.”NIST hasn’t researched single photon production just to aid QKD, but its success will be a great boon for QKD where absolute provable security is a necessity – especially, for example in the government and the military.“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
NIST hasn’t researched single photon production just to aid QKD, but its success will be a great boon for QKD where absolute provable security is a necessity – especially, for example in the government and the military.“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
“The big advance from NIST is they are able to provide single photons at a time, as opposed to sending multiple photons,” continues Bruggeman. Single photons aren’t new, but in the past, they’ve usually been photons in a stream of photons. “So, they encode the key information on those strings, and that leads to replication. And in cryptography, you don’t want to have replication of data.”There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
There is currently a comfort level in this redundancy, since if one photon in the stream fails, the next one might succeed. But NIST has separately developed Superconducting Nanowire Single-Photon Detectors (SNSPDs) which would allow single photons to be reliably sent and received over longer distances – up to 600 miles.The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
The second big advance is that NIST can do this on a single chip, which means such chips could be in mass production by the end of next year. Traditionally, NIST develops standards and industry rapidly adopts them. While the QKD market is likely to be relatively small (limited to areas that require very strong security), separate applications will quickly follow.The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
The reliable production of single photons could even be used within the quantum computers themselves since some quantum computing companies use photons as qubits. Perhaps more importantly in the shorter term, single photon chips could help existing small quantum devices to network and provide early quantum computing solutions before full-scale quantum computers arrive.Whether organizations choose to base ongoing security on PQC or QKD, that decision needs to be made now. NIST’s single photon chip will likely make QKD an option for a wider range of companies.Related:Project Eleven Raises $20 Million for Post-Quantum SecurityRelated:Bill Aims to Create National Strategy for Quantum Cybersecurity MigrationRelated:Cisco’s Quantum Bet: Linking Small Machines Into One Giant Quantum ComputerRelated:MITRE Publishes Post-Quantum Cryptography Migration Roadmap
Source: SecurityWeek
