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Direct observation of any two-point quantum correlation function
Francesco Buscemi, Michele Dall'Arno, Masanao Ozawa +1
The existence of noncompatible observables in quantum theory makes a direct operational interpretation of two-point correlation functions problematic. Here we challenge such a view…
How Discord underlies the Noise Resilience of Quantum Illumination
Christian Weedbrook, Stefano Pirandola, Jayne Thompson +2
The benefits of entanglement can outlast entanglement itself. In quantum illumination, entanglement is employed to better detect reflecting objects in environments so noisy that al…
Quantum Computing with black-box Subroutines
Jayne Thompson, Mile Gu, Kavan Modi +1
Modern programming relies on our ability to treat preprogrammed functions as black boxes - we can invoke them as subroutines without knowing their physical implementation. Here we…
Guaranteed energy-efficient bit reset in finite time
Cormac Browne, Andrew J. P. Garner, Oscar C. O. Dahlsten +1
Landauer's principle states that it costs at least kTln2 of work to reset one bit in the presence of a heat bath at temperature T. The bound of kTln2 is achieved in the unphysical…
Experimental Verification of Quantum Discord in Continuous-Variable States
S. Hosseini, S. Rahimi-Keshari, J. Y. Haw +6
We introduce a simple and efficient technique to verify quantum discord in unknown Gaussian states and a certain class of non-Gaussian states. We show that any separation in the pe…
Comment on "Quantum Szilard Engine"
Martin Plesch, Oscar Dahlsten, John Goold +1
In a recently published letter [S. W. Kim, T. Sagawa, S. DeLiberato, and M. Ueda, PRL 106, 070401 (2011)] the influence of particle statistics on extractable work in the Szilard en…