Results 241 to 250 of about 11,924,253 (266)

Experimental violation of a Bell-like causal inequality in a photonic quantum switch. [PDF]

Sci Adv
Qu D, Lin Q, Xiao L, Zhan X, Xue P.
europepmc   +1 more source

Quantum linear solvers for scientific computing: a comparison of VQLS, HHL and quantum annealing on time-fractional diffusion problems. [PDF]

Sci Rep
Shayegan AHS.
europepmc   +1 more source

Skyrmionic Polarization Textures in Structured Dielectric Planar Media. [PDF]

Nanophotonics
Di Colandrea F, Marrucci L, Cardano F.
europepmc   +1 more source

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Limitations of quantum process tomography

SPIE Proceedings, 2005
Quantum process tomography is often cited as providing all the information that can be known about a given quantum process. In this paper we have shown that even if two processes appear identical under process tomography, it is possible to distinguish them using an interferometric setup. Using this setup, it is possible to gain more information about
Morgan Mitchell, Aephraim Steinberg
exaly   +2 more sources

Experimental demonstration of simplified quantum process tomography

Journal of Chemical Physics, 2013
The essential tool to characterize dynamics of an open quantum system is quantum process tomography (QPT). Although standard QPT methods are hard to be scalable, simplified QPT approach is available if we have the prior knowledge that the system Hamiltonian commutes with the system-environment interaction Hamiltonian. Using a nuclear magnetic resonance
Xinhua Peng, Mang Feng
exaly   +3 more sources

Shadow process tomography of quantum channels [PDF]

Physical Review A, 2023
Quantum process tomography is a critical capability for building quantum computers, enabling quantum networks, and understanding quantum sensors. Like quantum state tomography, the process tomography of an arbitrary quantum channel requires a number of ...
Minh C Tran, Daniel Carney, Jacob Taylor   +2 more
exaly   +2 more sources

Coherent-State Quantum Process Tomography

AIP Conference Proceedings, 2009
The technologies of quantum information and quantum control are rapidly improving, but full exploitation of their capabilities requires complete characterization and assessment of processes that occur within quantum devices. We present a method for characterizing, with arbitrarily high accuracy, any quantum optical process.
Mirko Lobino, Dmitry Korystov, Connor Kupchak, Eden Figueroa, Barry C. Sanders, A. I. Lvovsky, Alexander Lvovsky   +6 more
openaire   +1 more source

Single-qubit, entanglement-assisted and ancilla-assisted quantum process tomography

, 2003
Quantum process tomography allows complete and precise characterization of a quantum operation. We report quantum process tomography of unitary, decohering, and partially polarizing operations using single-qubit, maximally entangled, and non-entangled ...
Chuanshun Wei
exaly   +1 more source

Quantum tomography as a new approach to simulating quantum processes

Journal of Experimental and Theoretical Physics, 2004
A new method is proposed for ab initio calculations of nonstationary quantum processes on the basis of a probability representation of quantum mechanics with the help of a positive definite function (quantum tomogram). The essence of the method is that an ensemble of trajectories associated with the characteristics of the evolution equation for the ...
A. S. Arkhipov, Yu. E. Lozovik
openaire   +1 more source

Towards Quantum Process Tomography of an Optical Quantum Gate

Latin America Optics and Photonics Conference, 2014
Here, we investigate the slowdown of low-light intensity pulses under the conditions of electromagnetically induced transparency (EIT) using homodyne tomography measurement techniques. This technique is necessary for performing quantum process tomography for characterizing quantum systems.
Connor Kupchak, Zak Burkley, Bertus Jordaan, Christian Nölleke, Eden Figueroa   +4 more
openaire   +1 more source