4 papers
Optimal characterization of Gaussian channels using photon-number-resolving detectors
Chandan Kumar, Ritabrata Sengupta, Arvind
We present optimal schemes, based on photon number measurements, for Gaussian state tomography and for Gaussian process tomography. An -mode Gaussian state is completely specifi…
Coherence assisted non-Gaussian measurement device independent quantum key distribution
Chandan Kumar, Jaskaran Singh, Soumyakanti Bose +1
Non-Gaussian operations on two mode squeezed vacuum states (TMSV) in continuous variable measurement device independent quantum key distribution (CV-MDI-QKD) protocols have been sh…
Frequentist-approach inspired theory of quantum random phenomena predicts signaling
C. S. Sudheer Kumar, Anup Biswas, Aditi Sen De +1
Different ensembles of the same density matrix are indistinguishable within the modern Kolmogorov probability measure theory of quantum random phenomena. We find that changing the…
On-demand quantum key distribution using superconducting rings with a mesoscopic Josephson junction
Chandan Kumar, Jaskaran Singh, Arvind
We present a quantum key distribution (QKD) protocol based on long lived coherent states prepared on superconducting rings with a mesoscopic Josephson junction (dc-SQUIDs). This en…