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Eun-Ah Kim, professor of physics in the College of Arts and Sciences, and Google researchers report the first demonstration of two-dimensional particles, called non-Abelian anyons, that are the key in...
Comment on "Semiquantum-key distribution using less than four quantum states"
Semiquantum-key distribution quantum states
2010/11/4
Comment on "Semiquantum-key distribution using less than four quantum states".
Min-entropy and quantum key distribution: non-zero key rates for "small" numbers of signals
min-entropy quantum key distribution non-zero key rates
2010/11/8
We calculate an achievable secret key rate for quantum key distribution with a finite number of signals, by evaluating the min-entropy explicitly. The min-entropy can be expressed in terms of the gues...
Continuous variable quantum key distribution in non-Markovian channels
non-Markovian variable quantum
2010/11/8
We address continuous variable quantum key distribution (QKD) in non-Markovian lossy channels and show how the non-Markovian features may be exploited to enhance security and/or to detect the presence...
Ultimate crack and lack of any security in the statistical key exchange protocol with random signals and feedback
Ultimate crack Quantum Physics
2010/11/8
We deterministically crack the secure, statistical key exchange protocol based on feedback proposed by Pao-Lo Liu [ J. Lightwave Techology 27 (2009) pp. 5230-34]. The crack is ultimate and absolute be...
Reply to "Comment on 'Semiquantum-key distribution using less than four quantum states' "
Comment on Semiquantum-key distribution quantum states
2010/11/8
Recently Boyer and Mor pointed out the first conclusion of Lemma 1 in our original paper is not correct, and therefore, the proof of Theorem 5 based on Lemma 1 is wrong. Furthermore, they gave a direc...
Device-Independent Quantum Key Distribution with Commuting Measurements
Device-Independent Quantum Key Distribution ommuting Measurements
2010/10/19
We consider quantum key distribution in the device-independent scenario, i.e., where the
legitimate parties do not know (or trust) the exact specification of their apparatus. We show
how secure key ...
Secure device-independent quantum key distribution with causally independent measurement devices
Secure device-independent quantum key distribution causally independent measurement devices
2010/10/19
Device-independent quantum key distribution aims to provide key distribution schemes whose security is based on the laws of quantum physics but which does not require any assumptions
about the intern...
Proof-of-Concept of Real-World Quantum Key Distribution with Quantum Frames
Proof-of-Concept Real-World Quantum Quantum Frames
2010/4/7
We propose and experimentally investigate a fibre-based quantum key distribution system, which employs polarization qubits encoded into faint laser pulses. As a novel feature, it allows sending of cla...
Entangled Quantum Key Distribution with a Biased Basis Choice
Quantum Key Distribution Basis Choice
2010/4/8
We investigate a quantum key distribution (QKD) scheme which utilizes a biased basis choice in order to increase the efficiency of the scheme. The optimal bias between the two measurement bases, a mor...
Multi-mode states in decoy-based quantum key distribution protocols
Multi-mode states decoy-based quantum key distribution protocols
2010/4/12
Every security analysis of quantum key distribution (QKD) relies on a faithful modeling of the employed quantum states. Many photon sources, like for instance a parametric down conversion (PDC) source...
Upper bounds for the secure key rate of decoy state quantum key distribution
Upper bounds secure key decoy state quantum key
2010/4/12
The use of decoy states in quantum key distribution (QKD) has provided a method for substantially increasing the secret key rate and distance that can be covered by QKD protocols with practical signal...
Numerical analysis of decoy state quantum key distribution protocols
Numerical analysis decoy state quantum key distribution protocols
2010/4/7
Decoy state protocols are a useful tool for many quantum key distribution systems implemented with weak coherent pulses, allowing significantly better secret bit rates and longer maximum distances. In...
Efficient reconciliation protocol for discrete-variable quantum key distribution
Efficient reconciliation protocol discrete-variable quantum key distribution
2010/4/13
Reconciliation is an essential part of any secret-key agreement protocol and hence of a Quantum Key Distribution (QKD) protocol, where two legitimate parties are given correlated data and want to agre...
Deterministic Quantum Key Distribution Using Two Non-orthogonal Entangled States
quantum key distribution quantum entanglement state
2007/8/15
2007Vol.47No.3pp.459-463DOI:
Deterministic Quantum Key Distribution Using Two Non-orthogonal Entangled States
GUO Ying1,2 and ZENG Gui-Hua2
1 Department of Communication...