160 citations · 306 across the 9 of their papers we have counts for
9 papers
Toward a Scalable Linear-Cavity Enhanced Warm-Vapor Photonic Quantum Memory
Bharath Srivathsan, Rafal Gartman, Robert J. A. Francis-Jones +2
The coherent storage, buffering and retrieval of photons in a quantum memory enables the scalable creation of photonic entangled states via linear optics and repeat-until-success,…
Measuring the temperature and heating rate of a single ion by imaging
Bharath Srivathsan, Martin Fischer, Lucas Alber +3
We present a technique based on high resolution imaging to measure the absolute temperature and the heating rate of a single ion trapped at the focus of a deep parabolic mirror. We…
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…
Shifting the phase of a coherent beam with a Yb ion: influence of the scattering cross section
Martin Fischer, Bharath Srivathsan, Lucas Alber +3
We discuss and measure the phase shift imposed onto a radially polarized light beam when focusing it onto an ion. In the derivation of the expected phase shif…
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…
Hong-Ou-Mandel interference between triggered and heralded single photons from separate atomic systems
Victor Leong, Sandoko Kosen, Bharath Srivathsan +3
We present Hong-Ou-Mandel interference of single photons generated via two different physical processes by two independent atomic systems: scattering by a single atom, and parametr…
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…