Results 31 to 40 of about 1,749,039 (283)

Quantum Communication Protocol Employing Weak Measurements [PDF]

, 1999
We propose a communication protocol exploiting correlations between two events with a definite time-ordering: a) the outcome of a {\em weak measurement} on a spin, and b) the outcome of a subsequent ordinary measurement on the spin.
A.K. Ekert, Alonso Botero, B. Schumacher, Benni Reznik, C. Bennett, C.H. Bennett, C.H. Bennett, C.H. Bennett, C.H. Bennett, I.M. Duck, J.G. Story, J.M. Knight, L. Goldenberg, N. Zagury, N.W.M. Ritchie, Y. Aharonov, Y. Aharonov, Y. Aharonov, Y. Aharonov   +18 more
core   +2 more sources

‘Quantum Cheshire Cat’ as simple quantum interference

New Journal of Physics, 2015
In a recent work, Aharonov et al suggested that a photon could be separated from its polarization in an experiment involving pre- and post-selection (Aharonov et al 2013 New J. Phys.
Raul Corrêa, Marcelo França Santos, C H Monken, Pablo L Saldanha   +3 more
doaj   +1 more source

Bounds on nonlocal correlations in the presence of signaling and their application to topological zero modes

New Journal of Physics, 2019
Bell’s theorem renders quantum correlations distinct from those of any local-realistic model. Although being stronger than classical correlations, quantum correlations are limited by the Tsirelson bound.
Avishy Carmi, Yaroslav Herasymenko, Eliahu Cohen, Kyrylo Snizhko   +3 more
doaj   +1 more source

Time-series quantum reservoir computing with weak and projective measurements

npj Quantum Information, 2023
Time-series processing is a major challenge in machine learning with enormous progress in the last years in tasks such as speech recognition and chaotic series prediction.
Pere Mujal, Rodrigo Martínez-Peña, Gian Luca Giorgi, Miguel C. Soriano, Roberta Zambrini   +4 more
doaj   +1 more source

Noise bias in weak lensing shape measurements [PDF]

, 2012
Weak lensing experiments are a powerful probe of cosmology through their measurement of the mass distribution of the universe. A challenge for this technique is to control systematic errors that occur when measuring the shapes of distant galaxies.
Adam Amara, Albrecht, Alexandre Refregier, Amara, Barnaby Rowe, Bernstein, Bernstein, Bonnet, Bridle, Bridle, Cramér, Fisher, Heymans, Hirata, Hoekstra, Kacprzak, Kaiser, Kaiser, Kuijken, Lewis, Massey, Melchior, Miller, Paulin-Henriksson, Paulin-Henriksson, Peacock, Rao, Refregier, Refregier, Rowe, Sarah Bridle, Tomasz Kacprzak, Tyson, Voigt   +33 more
core   +2 more sources

Engineering two-qubit mixed states with weak measurements

Physical Review Research, 2020
It is known that protocols based on weak measurements can be used to steer quantum systems into predesignated pure states. Here we show that weak-measurement-based steering protocols can be harnessed for on-demand engineering of mixed states.
Parveen Kumar, Kyrylo Snizhko, Yuval Gefen   +2 more
doaj   +1 more source

Reconstructing weak values without weak measurements

, 2007
I propose a scheme for reconstructing the weak value of an observable without the need for weak measurements. The post-selection in weak measurements is replaced by an initial projector measurement.
Aharonov, Aharonov, Aharonov, Aharonov, Aharonov, Brunner, Johansen, Johansen, Lars M. Johansen, Lüders, Mølmer, Parks, Prugovečki, Pryde, Resch, Ritchie, Rohrlich, Solli, Tollaksen, von Neumann, Wang   +20 more
core   +1 more source

Quantum feedback with weak measurements [PDF]

, 1999
The problem of feedback control of quantum systems by means of weak measurements is investigated in detail. When weak measurements are made on a set of identical quantum systems, the single-system density matrix can be determined to a high degree of ...
A. Blaquiere, A. Louis-Joseph, A. Mecozzi, A. Peirce, A. Peres, A. Peres, A. Peres, A.B. Matsko, A.J. Leggett, A.S. Parkins, C.M. Caves, C.P. Smith, D. Abrams, D.C. Calvo, D.J. Jones, G.M. Huang, H. Haus, H. Mabuchi, H.M. Wiseman, H.M. Wiseman, H.M. Wiseman, H.M. Wiseman, J. Polchinski, J. von Neumann, J.-Y. Liu, Jean-Jacques E. Slotine, K. Kraus, M. Czachor, M. Czachor, M. Czachor, M. Czachor, M. Czachor, M. Czachor, M. Czachor, M. Czachor, M. Czachor, M. Dahleh, M. Kuna, N. Gisin, O.R. Ernst, P. Broekart, R. Alicki, R.S. Judson, S. Vathyam, S. Weinberg, S.B. Leble, Seth Lloyd, V. Ramakrishna, V.B. Braginsky, W. Richter, W.S. Warren, Y. Aharonov, Y. Aharonov, Y. Lai, Y. Lai   +54 more
core   +2 more sources

Weak values in continuous weak measurements of qubits

Physical Review A, 2015
For continuous weak measurement of qubits, we obtain exact expressions for weak values (WVs) from the post-selection restricted average of measurement outputs, by using both the quantumtrajectory- equation (QTE) and quantum Bayesian approach. The former is applicable to short-time weak measurement, while the latter can relax the measurement strength to
Qin, Lupei, Liang, Pengfei, Li, Xin-Qi
openaire   +2 more sources

Weak measurement of the Goos–Hänchen shift [PDF]

Optics Letters, 2013
It is well known from quantum mechanics that weak measurements offer a means of amplifying and detecting very small phenomena. We present here the first experimental observation of the Goos-Hanchen shift via a weak measurement approach.
JAYASWAL, GAURAV, MISTURA, GIAMPAOLO, MERANO, MICHELE   +2 more
openaire   +4 more sources