Abstract
We describe a method in which the entanglement of any pure quantum state can be experimentally determined by a simple projective measurement, provided the state is available in a twofold copy. We propose implementations of this approach for various systems and discuss in detail its first experimental realization, which employed twin photons entangled in two degrees of freedom, prepared in identical polarization and momentum states. We analyze the effect of errors due to imperfect state preparation.
Walborn, S P;
Ribeiro, P H. Souto;
Davidovich, L;
Mintert, F;
Buchleitner, A;
[1]
Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States);
Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil);
Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany);
Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)]
- Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil)
Citation Formats
Walborn, S P, Ribeiro, P H. Souto, Davidovich, L, Mintert, F, Buchleitner, A, Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States), Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil), Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany), and Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)].
Experimental determination of entanglement by a projective measurement.
United States: N. p.,
2007.
Web.
doi:10.1103/PHYSREVA.75.032338.
Walborn, S P, Ribeiro, P H. Souto, Davidovich, L, Mintert, F, Buchleitner, A, Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States), Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil), Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany), & Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)].
Experimental determination of entanglement by a projective measurement.
United States.
https://doi.org/10.1103/PHYSREVA.75.032338
Walborn, S P, Ribeiro, P H. Souto, Davidovich, L, Mintert, F, Buchleitner, A, Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States), Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil), Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany), and Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)].
2007.
"Experimental determination of entanglement by a projective measurement."
United States.
https://doi.org/10.1103/PHYSREVA.75.032338.
@misc{etde_20982284,
title = {Experimental determination of entanglement by a projective measurement}
author = {Walborn, S P, Ribeiro, P H. Souto, Davidovich, L, Mintert, F, Buchleitner, A, Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States), Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil), Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany), and Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)]}
abstractNote = {We describe a method in which the entanglement of any pure quantum state can be experimentally determined by a simple projective measurement, provided the state is available in a twofold copy. We propose implementations of this approach for various systems and discuss in detail its first experimental realization, which employed twin photons entangled in two degrees of freedom, prepared in identical polarization and momentum states. We analyze the effect of errors due to imperfect state preparation.}
doi = {10.1103/PHYSREVA.75.032338}
journal = []
issue = {3}
volume = {75}
place = {United States}
year = {2007}
month = {Mar}
}
title = {Experimental determination of entanglement by a projective measurement}
author = {Walborn, S P, Ribeiro, P H. Souto, Davidovich, L, Mintert, F, Buchleitner, A, Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States), Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972 (Brazil), Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany), and Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)]}
abstractNote = {We describe a method in which the entanglement of any pure quantum state can be experimentally determined by a simple projective measurement, provided the state is available in a twofold copy. We propose implementations of this approach for various systems and discuss in detail its first experimental realization, which employed twin photons entangled in two degrees of freedom, prepared in identical polarization and momentum states. We analyze the effect of errors due to imperfect state preparation.}
doi = {10.1103/PHYSREVA.75.032338}
journal = []
issue = {3}
volume = {75}
place = {United States}
year = {2007}
month = {Mar}
}