7 papers · 1 filter
Quantum Illumination with Symmetry-Constrained Random Unitaries
Sooryansh Asthana, Sai Vinjanampathy
Quantum illumination provides a quantum advantage in detecting weakly reflecting objects embedded in a noisy environment, even when environmental noise destroys most of the initial…
Efficient Many-Body Shadow Metrology via Clifford Lensing
Sooryansh Asthana, Conan Alexander, Anubhav Kumar Srivastava +2
Quantum probes that enable enhanced exploration and characterization of complex systems are central to modern science, spanning applications from biology to astrophysics and chemic…
Projected Optimal Sensors from Operator Orbits
Sooryansh Asthana, Yeshma Ibrahim, Norman Tze Wei Koo +1
We unify Ramsey, twist-untwist, and random quantum sensors using operator algebra and account for the Fisher scaling of various sensor designs. We illustrate how the operator orbit…
Indispensability of orbital angular momentum states in secure quantum communication tasks
Rajni Bala, Sooryansh Asthana
Quantum key distribution protocols have been designed for layered networks employing multidimensional entangled and separable orbital angular momentum states [Phys. Rev. A 97, 0323…
Quantum secure direct communication with SU(2) invariant separable polarisation- OAM states
Sooryansh Asthana, Rajni Bala, V. Ravishankar
We propose a quantum secure direct communication protocol using SU (2)- invariant separable states, identified as separable equivalents of two-qubit entangled Werner st…
Contextuality based quantum conferencing
Rajni Bala, Sooryansh Asthana, V. Ravishankar
Nonlocality inequalities for multi-party systems act as contextuality inequalities for single qudit systems of suitable dimensions. In this paper, we propose the procedure for adap…