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quant-ph2003
An exact effective two-qubit gate in a chain of three spins
Man-Hong Yung, Debbie W. Leung, Sougato Bose
We show that an effective two-qubit gate can be obtained from the free evolution of three spins in a chain with nearest neighbor XY coupling, without local manipulations. This gate…
quant-ph2003★ 22 cited
Optimal State Discrimination Using Particle Statistics
S. Bose, A. Ekert, Y. Omar +2
We present an application of particle statistics to the problem of optimal ambiguous discrimination of quantum states. The states to be discriminated are encoded in the internal de…
quant-ph2003
Qubit Assisted Probing of Coherence Between States of a Macroscopic Apparatus
Sougato Bose
I present a general scheme through which the evidence of a superposition involving distinct classical-like states of a macroscopic system can be probed. The scheme relies on a qubi…