Roy Barzel
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Frequency shifts due to relativistic effects and retardation in continuous variable quantum key distribution Open
Space-based quantum communication naturally involves satellites and ground stations exchanging optical signals at high altitudes and large relative velocities. Starting from general relativistic considerations, we systematically separate t…
Pulse shape optimization against Doppler shifts and delays in optical quantum communication Open
High relative velocities and large distances in space-based quantum communication with satellites in lower earth orbits can lead to significant Doppler shifts and delays of the signal impairing the achievable performance if uncorrected. We…
Pulse shape optimization against Doppler shifts and delays in optical quantum communication Open
High relative velocities and large distances in space-based quantum communication with satellites in lower earth orbits can lead to significant Doppler shifts and delays of the signal impairing the achievable performance if uncorrected. We…
View article: Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth
Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth Open
We investigate the effect of entanglement dynamics due to gravity – the basis of a mechanism of universal decoherence – for photonic states and quantum memories in Mach-Zehnder and Hong-Ou-Mandel interferometry setups in the gravitational …
Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth Open
We investigate the effect of entanglement dynamics due to gravity -- the basis of a mechanism of universal decoherence -- for photonic states and quantum memories in Mach-Zehnder and Hong-Ou-Mandel interferometry setups in the gravitationa…
Observer dependence of photon bunching: The influence of the relativistic redshift on Hong-Ou-Mandel interference Open
We study the influence of the relativistic redshift on Hong-Ou-Mandel (HOM) interference, and present a genuine quantum test of general relativity. We use Glauber's theory of quantum coherence to predict the coincidence probability of real…
Role of indistinguishability and entanglement in Hong-Ou-Mandel interference and finite bandwidth effects of frequency entangled photons Open
We investigate the relation between indistinguishability and quantum entanglement in Hong- Ou-Mandel-interference experiments theoretically and relate these quantum mechanical principles to the theorem of entanglement monogamy. Employing G…
Delayed Transition to Coherent Emission in Nanolasers with Extended Gain Media Open
The realization of high-$\\beta$ lasers is one of the prime applications of\ncavity-QED promising ultra-low thresholds, integrability and reduced power\nconsumption in the field of \\textit{green photonics}. In such nanolasers\nspontaneous…
Do Nanolasers Benefit From a High $\beta$-Factor? Open
The realization of high-$\beta$ lasers is one of the prime applications of cavity-QED promising ultra-low thresholds, integrability and reduced power consumption in the field of \textit{green photonics}. In such nanolasers spontaneous emis…