Entangled identical particles and noise

Details Entangled identical particles and noise Entangled identical particles and noise

2011-07-25

arxiv.org/abs/1107.5071v1

Int J Quant Inf 9, 1745 (2011)

Physics

Quantum Physics

11 pages

Scientific paper

10.1142/S0219749911008210

For systems of identical Bosons, it is necessary to reformulate the notions of separability and entanglement in algebraic terms shifting the emphasis from the particle aspect of first quantization to the mode description typical of second quantization. Within this new framework, we show that, unlike for systems consisting of distinguishable qubits, negativity is an exhaustive bipartite entanglement witness for systems with fixed number of Bosons; further, we investigate the impact of dephasing noise in relation to the use of such many-body Bosonic systems in metrological applications.

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