Quantum Erasure Cryptography

Salih, Hatim

doi:10.3389/fphy.2016.00016

Cited by 5 publications

(8 citation statements)

References 10 publications

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“…Let us consider a general QKD protocol (based on a scheme proposed in ref. [110]) where a secret key can be distributed by means of the measurements of the momentum of the transmitted particle without observing the polarization. Also this scheme can be considered an improvement of BB84 but the fact of performing only one measurement allows a more simple physical implementation w.r.t.…”

Section: Momentum-measurement Protocolmentioning

confidence: 99%

“…Since the other separable state

false| {normalΨ}_{1} false⟩

is ruled out, if Eve re‐sends the state

false| {normalΨ}_{0} false⟩

, then she transmits the correct state to Bob with probability

\frac{1}{2}

. Assuming Eve intercepts every transmitted particle, she introduces the error rate

e = \frac{1}{3}

in the sifted key [ 110 ] that is greater than the error rate of

\frac{1}{4}

for BB84 under a standard intercept‐and‐resend attack. Moreover, the protocol turns out to be robust under a detector‐blinding attack [ 110 ] where Eve is able to blind Bob's measurement device.…”

Section: Single‐particle Entanglement For Quantum Information Applicamentioning

confidence: 99%

“…Assuming Eve intercepts every transmitted particle, she introduces the error rate

e = \frac{1}{3}

in the sifted key [ 110 ] that is greater than the error rate of

\frac{1}{4}

Section: Single‐particle Entanglement For Quantum Information Applicamentioning

confidence: 99%

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Single‐Particle Entanglement

et al. 2020

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This review is about single-particle entanglement. Entanglement occurs when the state of a quantum system with at least two degrees of freedom has a particular non-separable form. In the case of single-particle entanglement, this quantum correlation is shared by the same particle being it a photon, a neutron, an ion, or an atom. Here, the basics of quantum entanglement are discussed focusing on the case it is related to the degrees of freedom of a single particle. It is discussed how the violation of peculiar inequalities in this context rules out any realistic non-contextual hidden variable theory alternative to quantum mechanics. Moreover, experiments that demonstrate single-particle entanglement for photons, neutrons, and atoms are discussed. Finally, the applications of single-particle entanglement as a resource for quantum information are discussed and specifically quantum key distribution is detailed, where the use of single-particle entangled photons allows to improve the security of the BB84 protocol.

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Section: Momentum-measurement Protocolmentioning

confidence: 99%

“…Since the other separable state

false| {normalΨ}_{1} false⟩

is ruled out, if Eve re‐sends the state

false| {normalΨ}_{0} false⟩

, then she transmits the correct state to Bob with probability

\frac{1}{2}

. Assuming Eve intercepts every transmitted particle, she introduces the error rate

e = \frac{1}{3}

in the sifted key [ 110 ] that is greater than the error rate of

\frac{1}{4}

Section: Single‐particle Entanglement For Quantum Information Applicamentioning

confidence: 99%

“…Assuming Eve intercepts every transmitted particle, she introduces the error rate

e = \frac{1}{3}

in the sifted key [ 110 ] that is greater than the error rate of

\frac{1}{4}

Section: Single‐particle Entanglement For Quantum Information Applicamentioning

confidence: 99%

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Single‐Particle Entanglement

et al. 2020

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“…Practically, quantum erasure has been used to entangle, for the first time, two different-colour photons [ 7 ], and more recently, to propose a new protocol for quantum key distribution (QKD) that promises inherent security against detector-targeting attacks [ 8 ].…”

mentioning

confidence: 99%

“…Erasing which-path information, even long after the particles have been detected, remarkably restores interference, seemingly allowing one to alter the past [4][5][6]. What is actually altered, however, is what one can say about the pastan argument for Bohr's view of physics as not being about what the world is, but rather what can be said about the world.Practically, quantum erasure has been used to entangle, for the first time, two different-colour photons [7], and more recently, to propose a new protocol for quantum key distribution (QKD) that promises inherent security against detector-targeting attacks [8].Counterfactuality, on the other hand, gleans information from events that could have happened but did not in fact take place.…”

mentioning

confidence: 99%