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Deterministic Quantum Phase Estimation with Linear Circuit Complexity in a Photonic System
M. Midhuna, Ajay Jayachandran, Kanad Sengupta +2
The paper presents a deterministic quantum phase estimation algorithm that reduces circuit depth from quadratic to linear for a specific class of unitary operators, and demonstrate…
Photonic Simulation of Beyond-Quantum Nonlocal Correlations (e.g. Popescu-Rohrlich Box) with Non-Signaling Quantum Resources
Kunal Shukla, Anirudh Verma, Kanad Sengupta +3
Bell nonlocality exemplifies the most profound departure of quantum theory from classical realism. Yet, the extent of nonlocality in quantum theory is intrinsically bounded, fallin…
Experimental realization of universal quantum gates and six-qubit entangled state using photonic quantum walk
Kanad Sengupta, S. P. Dinesh, K. Muhammed Shafi +2
For quantum computation using photons, performing deterministic quantum gate operations is a challenge due to the probabilistic nature of the photon-photon interaction. Encoding qu…
Deterministic quantum teleportation of a path-encoded state using entangled photons
Akshai T. Krishnan, Kanad Sengupta, S. P. Dinesh +1
Quantum teleportation enables a way to transmit an arbitrary qubit state from one place to an other. A standard scheme for teleportation in optical setup involve three photons, an…
Quantum illumination using polarization-entangled photon pairs for enhanced object detection
Kanad Sengupta, K. Muhammed Shafi, Soumya Asokan +1
Entangled light sources for illuminating objects offer advantages over conventional illumination methods by enhancing the detection sensitivity of reflecting objects. The core of t…
Four-qubit photonic system for publicly verifiable quantum random numbers and generation of public and private key
Mayalakshmi Kolangatt, Anirudh Verma, Sujai Matta +2
We theoretically propose and experimentally demonstrate the use of a configurable four-qubit photonic system to generate a publicly verifiable quantum random numbers, to perform en…