404 citations · 1.6k across the 100 of their papers we have counts for
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Entanglement properties of positive operators with ranges in completely entangled subspaces
R Sengupta, Arvind, Ajit Iqbal Singh
We prove that the projection on a completely entangled subspace S of maximum dimension in a multipartite quantum system obtained by Parthasarathy is not positive under partial tran…
Experimental protection against evolution of states in a subspace via a super-Zeno scheme on an NMR quantum information processor
Harpreet Singh, Arvind, Kavita Dorai
We experimentally demonstrate the freezing of evolution of quantum states in one- and two-dimensional subspaces of two qubits, on an NMR quantum information processor. State evolut…
Quantum Private Comparison over noisy channels
Vikesh Siddhu, Arvind
Quantum Private Comparison (QPC) allows us to protect private information during its comparison. In the past various three-party quantum protocols have been proposed that claim to…
Experimental construction of generic three-qubit states and their reconstruction from two-party reduced states on an NMR quantum information processor
Shruti Dogra, Kavita Dorai, Arvind
We experimentally explore the state space of three qubits on an NMR quantum information processor. We construct a scheme to experimentally realize a canonical form for general thre…
Determining the parity of a permutation using an experimental NMR qutrit
Shruti Dogra, Arvind, Kavita Dorai
We present the NMR implementation of a recently proposed quantum algorithm to find the parity of a permutation. In the usual qubit model of quantum computation, speedup requires th…
Estimation of quantum states by weak and projective measurements
Debmalya Das, Arvind
We explore the possibility of using "weak" measurements to carry out quantum state tomography. Given a certain fixed number of copies of identically prepared states of a qubit, we…