%0 Journal Article
%J European Journal of Physics
%D 2022
%T How long does it take to implement a projective measurement?
%A Strasberg, Philipp
%A Modi, Kavan
%A Skotiniotis, Michalis
%B European Journal of Physics
%V 43
%P 035404
%8 Jan-05-2022
%U https://iopscience.iop.org/article/10.1088/1361-6404/ac5a7a
%! Eur. J. Phys.
%R 10.1088/1361-6404/ac5a7a
%0 Journal Article
%J Phys. Rev. Lett.
%D 2019
%T How to Quantify a Dynamical Quantum Resource
%A Gour, Gilad
%A Winter, Andreas
%B Phys. Rev. Lett.
%V 123
%P 150401
%8 Oct
%U https://link.aps.org/doi/10.1103/PhysRevLett.123.150401
%R 10.1103/PhysRevLett.123.150401
%0 Journal Article
%J Physical Review E
%D 2017
%T Heating without heat: Thermodynamics of passive energy filters between finite systems
%A Muñoz-Tapia, R.
%A Brito, R.
%A Parrondo, J. M. R.
%B Physical Review E
%V 96
%8 Jan-09-2017
%U https://link.aps.org/doi/10.1103/PhysRevE.96.030103http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevE.96.030103/fulltexthttps://link.aps.org/article/10.1103/PhysRevE.96.030103
%! Phys. Rev. E
%R 10.1103/PhysRevE.96.030103
%0 Journal Article
%J Physical Review A
%D 2016
%T Heisenberg-{Weyl} {Observables}: {Bloch} vectors in phase space
%A Asadian, Ali
%A Erker, Paul
%A Huber, Marcus
%A Klockl, Claude
%X We introduce a Hermitian generalization of Pauli matrices to higher dimensions which is based on Heisenberg-Weyl operators. The complete set of Heisenberg-Weyl observables allows us to identify a real-valued Bloch vector for an arbitrary density operator in discrete phase space, with a smooth transition to infinite dimensions. Furthermore, we derive bounds on the sum of expectation values of any set of anticommuting observables. Such bounds can be used in entanglement detection and we show that Heisenberg-Weyl observables provide a first nontrivial example beyond the dichotomic case.
%B Physical Review A
%V 94
%P 010301
%8 jul
%U https://link.aps.org/doi/10.1103/PhysRevA.94.010301
%R 10.1103/PhysRevA.94.010301
%0 Journal Article
%J Physical Review Letters
%D 2009
%T Holonomic Quantum Computation in Subsystems
%A Oreshkov, Ognyan
%X We introduce a generalized method of holonomic quantum computation (HQC) based on encoding in subsystems. As an application, we propose a scheme for applying holonomic gates to unencoded qubits by the use of a noisy ancillary qubit. This scheme does not require initialization in a subspace since all dynamical effects factor out as a transformation on the ancilla. We use this approach to show how fault-tolerant HQC can be realized via 2-local Hamiltonians with perturbative gadgets.
%B Physical Review Letters
%V 103
%P 090502
%G eng
%U http://prl.aps.org/abstract/PRL/v103/i9/e090502
%R 10.1103/PhysRevLett.103.090502
%0 Journal Article
%J New Journal of Physics
%D 2007
%T How to hide a secret direction
%A Bagan, Emili
%A John Calsamiglia
%A Demkowicz-Dobrzanski, R.
%A Muñoz-Tapia, Ramon
%X We present a procedure to share a secret spatial direction in the absence of a common reference frame using a multipartite quantum state. The procedure guarantees that the parties can determine the direction if they perform joint measurements on the state, but fail to do so if they restrict themselves to local operations and classical communication (LOCC). We calculate the fidelity for joint measurements, give bounds on the fidelity achievable by LOCC, and prove that there is a non-vanishing gap between the two of them, even in the limit of infinitely many copies. The robustness of the procedure under particle loss is also studied. As a by-product we find bounds on the probability of discriminating by LOCC between the invariant subspaces of total angular momentum N/2 and N/2-1 in a system of N elementary spins.
%B New Journal of Physics
%V 9
%P 244
%G eng
%U http://iopscience.iop.org/1367-2630/9/8/244/pdf/1367-2630\_9\_8\_244.pdf
%R doi:10.1088/1367-2630/9/8/244