Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium

Details Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium

2010-01-25

arxiv.org/abs/1001.4389v1

Phys. Rev. B 81, 115331 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 pages appendix, 3 figures

Scientific paper

10.1103/PhysRevB.81.115331

Electrical current fluctuations in a single-channel quantum point contact can produce photons (at frequency omega close to the applied voltage V x e/hbar) which inherit the sub-Poissonian statistics of the electrons. We extend the existing zero-temperature theory of the photostatistics to nonzero temperature T. The Fano factor F (the ratio of the variance and the average photocount) is <1 for T1 for T>T_c (bunched photons). The crossover temperature T_c ~ Deltaomega x hbar/k_B is set by the band width Deltaomega of the detector, even if hbar x Deltaomega << eV. This implies that narrow-band detection of photon antibunching is hindered by thermal fluctuations even in the low-temperature regime where thermal electron noise is negligible relative to shot noise.

Affiliated with

Also associated with

No associations

Rating

Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonzero temperature effects on antibunched photons emitted by a quantum point contact out of equilibrium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-130737