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Selected Concepts of Quantum State Tomography

Optics, 2022
Quantum state tomography (QST) refers to any method that allows one to reconstruct the accurate representation of a quantum system based on data obtainable from an experiment.
Artur Czerwinski
doaj   +2 more sources

Efficient quantum state tomography [PDF]

Nature Communications, 2010
Quantum state tomography-deducing quantum states from measured data-is the gold standard for verification and benchmarking of quantum devices. It has been realized in systems with few components, but for larger systems it becomes unfeasible because the number of measurements and the amount of computation required to process them grows exponentially in ...
Cramer M., Plenio M.B., Flammia S.T., Somma R., Gross D., Bartlett S.D., Landon-Cardinal O., Poulin D., Liu Y.-K.   +8 more
openaire   +5 more sources

Information Geometry of Randomized Quantum State Tomography [PDF]

Entropy, 2018
Suppose that a d-dimensional Hilbert space H ≃ C d admits a full set of mutually unbiased bases | 1 ( a ) 〉 , ⋯ , | d ( a ) 〉 , where a = 1 , ⋯ , d + 1 .
Akio Fujiwara, Koichi Yamagata
doaj   +2 more sources

Quantum state tomography with quantum shotnoise [PDF]

Physical Review B, 2005
We propose a scheme for a complete reconstruction of one- and two-particle orbital quantum states in mesoscopic conductors. The conductor in the transport state continuously emits orbital quantum states.
J. L. van Velsen, K. Vogel, M. Büttiker, P. Samuelsson, S. Oberholzer, W. Pauli, Y. X. Liu   +6 more
core   +3 more sources

Tomography of Parametrized Quantum States

PRX Quantum
Characterizing quantum systems is a fundamental task that enables the development of quantum technologies. Various approaches, ranging from full tomography to instances of classical shadows, have been proposed to this end.
Franz J. Schreiber, Jens Eisert, Johannes Jakob Meyer   +2 more
doaj   +3 more sources

Cyclic measurements and simplified quantum state tomography [PDF]

Quantum
Tomographic reconstruction of quantum states plays a fundamental role in benchmarking quantum systems and accessing information encoded in quantum-mechanical systems. Among the informationally complete sets of quantum measurements, the tight ones provide
Victor Gonzalez Avella, Jakub Czartowski, Dardo Goyeneche, Karol Życzkowski   +3 more
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A computationally efficient approach to quantum state reconstruction using robust classical shadows [PDF]

Scientific Reports
Quantum state tomography is a fundamental technique for characterizing quantum systems, but its scalability remains a significant challenge. This paper investigates an efficient alternative using classical shadows to reconstruct a Bell state with high ...
Sanjay Sharma, Shyam Akashe, Govind Murari Upadhyay, Amanjot Kaur Lamba   +3 more
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Continuous-variable optical quantum state tomography [PDF]

Reviews of Modern Physics, 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   +3 more sources

Quantum State Tomography and Quantum Games [PDF]

Chinese Physics Letters, 2011
We develop a technique for single qubit quantum state tomography using the mathematical setup of generalized quantization scheme for games. In our technique Alice sends an unknown pure quantum state to Bob who appends it with |0>
Nawaz, Ahmad
core   +3 more sources

Adaptive quantum state tomography via linear regression estimation: Theory and two-qubit experiment

npj Quantum Information, 2017
Quantum tomography: Adaptivity improves precision Quantum state tomography is an essential task in the development of quantum technology. The key problem is to find a strategy that has a high level of estimation accuracy and is easy to experimentally ...
Bo Qi, Zhibo Hou, Yuanlong Wang, Daoyi Dong, Han-Sen Zhong, Li Li, Guo-Yong Xiang, Howard M. Wiseman, Chuan-Feng Li, Guang-Can Guo   +9 more
doaj   +2 more sources