Robust quantum key distribution with two-photon polarization states

2006 ◽  
Vol 359 (2) ◽  
pp. 126-128 ◽  
Author(s):  
Ming Gao ◽  
Lin-Mei Liang ◽  
Cheng-Zu Li ◽  
Chen-Lin Tian
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Photon Polarization ◽  
Two Photon ◽  
Polarization States

QUANTUM CIRCUIT FOR ENTANGLING PROBE

2006 ◽  
Vol 20 (11n13) ◽  
pp. 1297-1303
Author(s):  
HOWARD E. BRANDT
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Quantum Circuit ◽  
Photon Polarization ◽  
Maximum Information ◽  
Bb84 Protocol ◽  
Polarization States ◽  
Probe Photon

The quantum circuit and design are given for an optimized entangling probe attacking the BB84 protocol of quantum key distribution and yielding maximum information to the probe. Probe photon polarization states become entangled with the signal states on their way between the legitimate transmitter and receiver.

Arbitrary Transformation of Two-Photon Polarization States with Metasurfaces

2020 ◽  
Author(s):  
Shaun Lung ◽  
Kai Wang ◽  
Khosro Zangeneh Kamali ◽  
Mohsen Rahmani ◽  
Dragomir N. Neshev ◽  
...  
Keyword(s):  
Photon Polarization ◽  
Two Photon ◽  
Polarization States

scholarly journals Quantification of the Impact of Photon Distinguishability on Measurement-Device- Independent Quantum Key Distribution

2018 ◽  
Author(s):  
Garrett Simon ◽  
Blake Huff ◽  
William Meier ◽  
Lee Harrell
Keyword(s):  
Quantum Key Distribution ◽  
Distribution Systems ◽  
Key Distribution ◽  
Third Party ◽  
Measurement Device ◽  
Quantum Bit ◽  
Two Photon ◽  
Measurement Results ◽  
The Impact ◽  
Measurement Device Independent

Measurement-Device-Independent Quantum Key Distribution (MDI-QKD) is a two-photon protocol devised to eliminate eavesdropping attacks that interrogate or control the detector in realized quantum key distribution systems. In MDI-QKD, the measurements are carried out by an untrusted third party, and the measurement results are announced openly. Knowledge or control of the measurement results gives the third party no information about the secret key. Error-free implementation of the MDI-QKD protocol requires the crypto-communicating parties, Alice and Bob, to independently prepare and transmit single photons that are physically indistinguishable, with the possible exception of their polarization states. In this paper, we apply the formalism of quantum optics and Monte Carlo simulations to quantify the impact of small errors in wavelength, bandwidth, polarization and timing between Alice's photons and Bob's photons on the MDI-QKD quantum bit error rate (QBER). Using published single-photon source characteristics from two-photon interference experiments as a test case, our simulations predict that the finite tolerances of these sources contribute (4.04+/-20/Nsifted) to the QBER in an MDI-QKD implementation generating an Nsifted-bit sifted key.

Polarization states encoded by phase modulation for high bit rate quantum key distribution

2006 ◽  
Vol 358 (5-6) ◽  
pp. 386-389 ◽  
Author(s):  
Xiaobao Liu ◽  
Zhilie Tang ◽  
Changjun Liao ◽  
Yiqun Lu ◽  
Feng Zhao ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Bit Rate ◽  
High Bit Rate ◽  
Polarization States

scholarly journals Feasibility of free space quantum key distribution with coherent polarization states

2009 ◽  
Vol 11 (4) ◽  
pp. 045014 ◽  
Author(s):  
D Elser ◽  
T Bartley ◽  
B Heim ◽  
Ch Wittmann ◽  
D Sych ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Polarization States
Sign in / Sign up

Export Citation Format

Share Document