23 citations · 250 across the 23 of their papers we have counts for
23 papers
Phase Sensitivity of Spectrally Multimode SU(1,1) Interferometers with Waveguide based Optical Parametric Amplifier
Sonu Jana, Swagatam Bag, Fabien Bretenaker +2
We present a comprehensive framework for evaluating the phase sensitivity of spectrally multimode SU(1,1) interferometers probed with a coherent-vacuum input, under both number and…
Sensitivity Evaluation of SU(1,1) Interferometers with Arbitrary Input Probe State and Homodyne Detections
Sonu Jana, Dhruv Baheti, Paul Grossiord +3
We provide a general theoretical derivation of the phase sensitivity achieved by SU(1,1) interferometers under homodyne detection. The general expressions obtained accommodate arbi…
Experimental Observation of Topological Quantum Criticality
Sonja Barkhofen, Syamsundar De, Jan Sperling +5
We report on the observation of quantum criticality forming at the transition point between topological Anderson insulator phases in a one-dimensional photonic quantum walk with sp…
Realization of high-fidelity unitary operations on up to 64 frequency bins
Syamsundar De, Vahid Ansari, Jan Sperling +3
The ability to apply user-chosen large-scale unitary operations with high fidelity to a quantum state is key to realizing future photonic quantum technologies. Here, we realize the…
Driven Gaussian quantum walks
Philip Held, Melanie Engelkemeier, Syamsundar De +3
Quantum walks function as essential means to implement quantum simulators, allowing one to study complex and often directly inaccessible quantum processes in controllable systems.…
Universal compressive tomography in the time-frequency domain
J. Gil-Lopez, Y. S. Teo, S. De +4
We implement a compressive quantum state tomography capable of reconstructing any arbitrary low-rank spectral-temporal optical signal with extremely few measurement settings and wi…