268 citations · 821 across the 12 of their papers we have counts for
12 papers
Characterization of a photon pair source based on a cold atomic ensemble using a cascade level scheme
Alessandro Cerè, Bharath Srivathsan, Gurpreet Kaur Gulati +2
We characterize a source of photon pairs based on cascade decay in a cold Rb-87 ensemble. This source is particularly suited to generate of photons for interaction with Rb-87 based…
Random numbers from vacuum fluctuations
Yicheng Shi, Brenda Chng, Christian Kurtsiefer
We implement a quantum random number generator based on a balanced homodyne measurement of vacuum fluctuations of the electromagnetic field. The digitized signal is directly proces…
Polarization entanglement and quantum beats of photon pairs from four-wave mixing in a cold Rb-87 ensemble
Gurpreet Kaur Gulati, Bharath Srivathsan, Brenda Chng +2
We characterize correlations in polarization and time of photon pairs generated from a cold cloud of Rb-87 atoms via a four-wave mixing process in a cascade level scheme. Quantum s…
Reversing the temporal envelope of a heralded single photon using a cavity
Bharath Srivathsan, Gurpreet Kaur Gulati, Alessandro Cerè +2
We demonstrate a way to prepare single photons with a temporal envelope that resembles the time reversal of photons from the spontaneous decay process. We use the photon pairs gene…
Counterintuitive temporal shape of single photons
Gurpreet Kaur Gulati, Bharath Srivathsan, Brenda Chng +3
We prepare heralded single photons from a photon pair source based on non-degenerate four-wave mixing in a cold atomic ensemble via a cascade decay scheme. Their statistics shows s…
Narrow Band Source of Transform-Limited Photon Pairs via Four-Wave Mixing in a Cold Atomic Ensemble
Bharath Srivathsan, Gurpreet Kaur Gulati, Chng Mei Yuen Brenda +3
We observe narrowband pairs of time-correlated photons of wavelengths 776\,nm and 795\,nm from non-degenerate four-wave mixing in a laser-cooled atomic ensemble of {Rb} usin…