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Quantum Description of Nuclear Spin Cooling in a Quantum Dot
H. Christ, J. I. Cirac, G. Giedke
We study theoretically the cooling of an ensemble of nuclear spins coupled to the spin of a localized electron in a quantum dot. We obtain a master equation for the state of the nu…
Quantum Capacities of Bosonic Channels
Michael M. Wolf, David Perez-Garcia, Geza Giedke
We investigate the capacity of bosonic quantum channels for the transmission of quantum information. Achievable rates are determined from measurable moments of the channel by showi…
Noise-Free Measurement of Harmonic Oscillators with Instantaneous Interactions
M. Franca Santos, G. Giedke, E. Solano
We present a method of measuring the quantum state of a harmonic oscillator through instantaneous probe-system selective interactions of the Jaynes-Cummings type. We prove that thi…