|
| related topics |
| {alice, bob, state} |
| {key, protocol, security} |
| {cos, sin, state} |
| {photon, photons, single} |
| {bell, inequality, local} |
| {equation, function, exp} |
| {time, wave, function} |
| {measurement, state, measurements} |
| {group, space, representation} |
| {temperature, thermal, energy} |
|
Two-Way Quantum Number Distribution Based on Entanglement and Bell-State
Measurements
Sung Soon Jang, Hai-Woong Lee
abstract: A scheme is proposed by which two parties, Alice and Bob, can securely
exchange real numbers. The scheme requires Alice and Bob to share entanglement
and both to perform Bell-state measurements. With a qubit system two real
numbers can each be sent by Alice and Bob, resulting in four real numbers
shared by them. The number of real numbers that can be shared increases if
higher-dimensional systems are utilized. The number of significant figures of
each shared real number depends upon the number of Bell-state measurements that
Alice and Bob perform. The security of the scheme against individual
eavesdropping attacks is analyzed and the effects of channel losses and errors
discussed.
- oai_identifier:
- oai:arXiv.org:quant-ph/0407138
- categories:
- quant-ph
- comments:
- 6 pages, 3 figures
- arxiv_id:
- quant-ph/0407138
- created:
- 2004-07-17
Full article ▸
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