274 citations · 1.4k across the 20 of their papers we have counts for
4 papers · 1 filter
Optimizing the discrete time quantum walk using a SU(2) coin
C. M. Chandrashekar, R. Srikanth, Raymond Laflamme
We present a generalized version of the discrete time quantum walk, using the SU(2) operation as the quantum coin. By varying the coin parameters, the quantum walk can be optimized…
Quantum phase transition using quantum walks in an optical lattice
C. M. Chandrashekar, Raymond Laflamme
We present an approach using quantum walks (QWs) to redistribute ultracold atoms in an optical lattice. Different density profiles of atoms can be obtained by exploiting the contro…
Symmetrised Characterisation of Noisy Quantum Processes
Joseph Emerson, Marcus Silva, Osama Moussa +5
A major goal of developing high-precision control of many-body quantum systems is to realise their potential as quantum computers. Probably the most significant obstacle in this di…
Fidelity enhancement by logical qubit encoding
Michael K. Henry, Chandrasekhar Ramanathan, Jonathan S. Hodges +4
We demonstrate coherent control of two logical qubits encoded in a decoherence free subspace (DFS) of four dipolar-coupled protons in an NMR quantum information processor. A pseudo…