Results 31 to 40 of about 76,745 (286)

Group theoretical quantum tomography [PDF]

Journal of Mathematical Physics, 2000
The paper is devoted to the mathematical foundation of quantum tomography using the theory of square-integrable representations of unimodular Lie groups.
CASSINELLI, GIOVANNI, G. M. DARIANO, DE VITO, ERNESTO, A. LEVRERO   +3 more
openaire   +3 more sources

Ultrafast Molecular Frame Quantum Tomography

Physical Review Letters, 2023
We develop and experimentally demonstrate a methodology for a full molecular frame quantum tomography (MFQT) of dynamical polyatomic systems. We exemplify this approach through the complete characterization of an electronically non-adiabatic wavepacket in ammonia (NH$_3$).
Morrigan, Luna, Neville, Simon P., Gregory, Margaret, Boguslavskiy, Andrey E., Forbes, Ruaridh, Wilkinson, Iain, Lausten, Rune, Stolow, Albert, Schuurman, Michael S., Hockett, Paul, Makhija, Varun   +10 more
openaire   +4 more sources

Continuous-variable optical quantum state tomography [PDF]

, 2008
This review covers latest developments in continuous-variable quantum-state tomography of optical fields and photons, placing a special accent on its practical aspects and applications in quantum information technology.
A. I. Lvovsky, Altepeter J. B., Bachor, H.-A., Banaszek, K., Bennett, C. H., Bialynicki-Birula, I., Blansett, E. L., Bohr, N., Bužek, V., Bužek, V., Bužek, V., Clausen, J., Cramér, H., Dempster, A. P., D’Ariano, G. M., D’Ariano, G. M., Fuchs C. A., Fuchs, C. A., Gerchberg, R. W., Gerry, C., Herman, G. T., Hradil, Z., Leonhardt, U., M. G. Raymer, Nicholson, P. W., Opatrný, T., Paul, H., Rao, C. R., Raymer, M. G., Raymer, M. G., Scully, M. O., U’Ren, A. B., U’Ren, A. B., Vardi, Y., Welsch, D.-G.   +34 more
core   +1 more source

Determining quantum coherence with minimal resources

New Journal of Physics, 2018
We characterize minimal measurement setups for validating the quantum coherence of an unknown quantum state. We show that for a d -level system, the optimal strategy consists of measuring d orthonormal bases such that each measured basis is mutually ...
Claudio Carmeli, Teiko Heinosaari, Sabrina Maniscalco, Jussi Schultz, Alessandro Toigo   +4 more
doaj   +1 more source

Tomography of Quantum Operations [PDF]

, 2000
Quantum operations describe any state change allowed in quantum mechanics, including the evolution of an open system or the state change due to a measurement.
D.-G. Welsch, G. M. D'Ariano, G. M. D'Ariano, G. M. D'Ariano, G. M. D'Ariano, G. M. D'Ariano, G. M. D'Ariano, I. L. Chuang, J. F. Poyatos, K. Banaszek, K. Kraus, K. R. W. Jones, M. Vasilyev, P. Lo Presti, Q. A. Turchette, U. Leonhardt   +15 more
core   +2 more sources

Reliable Quantum State Tomography [PDF]

Physical Review Letters, 2012
5 pages + supplemental information (as in the journal version) + additional material about the representation of symmetric states and functions of states (not contained in the journal version)
Christandl Matthias, Renner Renato
openaire   +3 more sources

Quantum process tomography with informational incomplete data of two J-coupled heterogeneous spins relaxation in a time window much greater than T1

New Journal of Physics, 2015
We reconstruct the time dependent quantum map corresponding to the relaxation process of a two-spin system in liquid-state NMR at room temperature.
Thiago O Maciel, Reinaldo O Vianna, Roberto S Sarthour, Ivan S Oliveira   +3 more
doaj   +1 more source

Self-guided quantum state tomography for limited resources

Scientific Reports, 2022
Quantum state tomography is a process for estimating an unknown quantum state; which is innately probabilistic. The exponential growth of unknown parameters to be estimated is a fundamental difficulty in realizing quantum state tomography for higher ...
Syed Tihaam Ahmad, Ahmad Farooq, Hyundong Shin   +2 more
doaj   +1 more source

Quantum tomography and the quantum Radon transform

Inverse Problems & Imaging, 2021
<p style='text-indent:20px;'>A general framework for the tomographical description of states, that includes, among other tomographical schemes, the classical Radon transform, quantum state tomography and group quantum tomography, in the setting of <inline-formula><tex-math id="M1">\begin{document}$ C^* $\end{document}</tex-math>&
Ibort, Alberto, López Yela, Alberto
openaire   +4 more sources

Relations between single and repeated qubit gates: coherent error amplification for high-fidelity quantum-gate tomography

New Journal of Physics, 2020
In quantum computation the target fidelity of the qubit gates is very high, with the admissible error being in the range from 10 ^−3 to 10 ^−4 and even less, depending on the protocol.
Nikolay V Vitanov
doaj   +1 more source