|
| related topics |
| {state, states, coherent} |
| {entanglement, phys, rev} |
| {information, entropy, channel} |
| {state, states, entangled} |
| {state, phys, rev} |
| {time, decoherence, evolution} |
| {photon, photons, single} |
| {qubit, qubits, gate} |
| {equation, function, exp} |
| {light, field, probe} |
| {alice, bob, state} |
| {measurement, state, measurements} |
| {wave, scattering, interference} |
| {algorithm, log, probability} |
| {error, code, errors} |
| {energy, gaussian, time} |
| {classical, space, random} |
| {vol, operators, histories} |
|
A computable measure of nonclassicality for light
J. K. Asbóth, J. Calsamiglia, H. Ritsch
abstract: We propose the Entanglement Potential (EP) as a measure of nonclassicality
for quantum states of a single-mode electromagnetic field. It is the amount of
two-mode entanglement that can be generated from the field using linear optics,
auxiliary classical states and ideal photodetectors. The EP detects
nonclassicality, has a direct physical interpretation, and can be computed
efficiently. These three properties together make it stand out from previously
proposed nonclassicality measures. We derive closed expressions for the EP of
important classes of states and analyze as an example the degradation of
nonclassicality in lossy channels.
- oai_identifier:
- oai:arXiv.org:quant-ph/0411164
- categories:
- quant-ph
- doi:
- 10.1103/PhysRevLett.94.173602
- arxiv_id:
- quant-ph/0411164
- journal_ref:
- Phys. Rev. Lett. 94, 173602 (2005)
- created:
- 2004-11-22
Full article ▸
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