TY - JOUR
T1 - How long does it take to implement a projective measurement?
JF - European Journal of Physics
Y1 - 2022
A1 - Strasberg, Philipp
A1 - Modi, Kavan
A1 - Skotiniotis, Michalis
VL - 43
UR - https://iopscience.iop.org/article/10.1088/1361-6404/ac5a7a
JO - Eur. J. Phys.
ER -
TY - JOUR
T1 - How to Quantify a Dynamical Quantum Resource
JF - Phys. Rev. Lett.
Y1 - 2019
A1 - Gour, Gilad
A1 - Winter, Andreas
VL - 123
UR - https://link.aps.org/doi/10.1103/PhysRevLett.123.150401
ER -
TY - JOUR
T1 - Heating without heat: Thermodynamics of passive energy filters between finite systems
JF - Physical Review E
Y1 - 2017
A1 - Muñoz-Tapia, R.
A1 - Brito, R.
A1 - Parrondo, J. M. R.
VL - 96
UR - 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
JO - Phys. Rev. E
ER -
TY - JOUR
T1 - Heisenberg-{Weyl} {Observables}: {Bloch} vectors in phase space
JF - Physical Review A
Y1 - 2016
A1 - Asadian, Ali
A1 - Erker, Paul
A1 - Huber, Marcus
A1 - Klockl, Claude
AB - 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.
VL - 94
UR - https://link.aps.org/doi/10.1103/PhysRevA.94.010301
ER -
TY - JOUR
T1 - Holonomic Quantum Computation in Subsystems
JF - Physical Review Letters
Y1 - 2009
A1 - Oreshkov, Ognyan
AB - 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.
VL - 103
UR - http://prl.aps.org/abstract/PRL/v103/i9/e090502
ER -
TY - JOUR
T1 - How to hide a secret direction
JF - New Journal of Physics
Y1 - 2007
A1 - Bagan, Emili
A1 - John Calsamiglia
A1 - Demkowicz-Dobrzanski, R.
A1 - Muñoz-Tapia, Ramon
AB - 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.
VL - 9
UR - http://iopscience.iop.org/1367-2630/9/8/244/pdf/1367-2630\_9\_8\_244.pdf
ER -