Characterizing d-dimensional quantum channels by means of quantum process tomography
In this Letter, we propose a simple optical architecture based on phase-only programmable spatial light modulators, in order to characterize general processes on photonic spatial quantum systems in a d > 2 Hilbert space. We demonstrate the full reconstruction of typical noises affecting quantum c...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01469592_v43_n18_p4398_Varga http://hdl.handle.net/20.500.12110/paper_01469592_v43_n18_p4398_Varga |
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paper:paper_01469592_v43_n18_p4398_Varga2025-07-30T17:51:59Z Characterizing d-dimensional quantum channels by means of quantum process tomography Atmospheric turbulence Light modulators Optical communication Quantum computers Quantum entanglement Quantum optics Tomography Free-space transmission Optical architectures Phase-only Quantum channel Quantum Computing Quantum process tomography Quantum system Spatial light modulators Communication channels (information theory) In this Letter, we propose a simple optical architecture based on phase-only programmable spatial light modulators, in order to characterize general processes on photonic spatial quantum systems in a d > 2 Hilbert space. We demonstrate the full reconstruction of typical noises affecting quantum computing, such as amplitude shifts, phase shifts, and depolarizing channels in dimension d 5. We have also reconstructed simulated atmospheric turbulences affecting a free-space transmission of qudits in dimension d 4. In each case, quantum process tomography was performed in order to obtain the matrix χ that fully describes the corresponding quantum channel, E. Fidelities between the states are experimentally obtained after going through the channel, and the expected ones are above 97%. © 2018 Optical Society of America 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01469592_v43_n18_p4398_Varga http://hdl.handle.net/20.500.12110/paper_01469592_v43_n18_p4398_Varga |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Atmospheric turbulence Light modulators Optical communication Quantum computers Quantum entanglement Quantum optics Tomography Free-space transmission Optical architectures Phase-only Quantum channel Quantum Computing Quantum process tomography Quantum system Spatial light modulators Communication channels (information theory) |
| spellingShingle |
Atmospheric turbulence Light modulators Optical communication Quantum computers Quantum entanglement Quantum optics Tomography Free-space transmission Optical architectures Phase-only Quantum channel Quantum Computing Quantum process tomography Quantum system Spatial light modulators Communication channels (information theory) Characterizing d-dimensional quantum channels by means of quantum process tomography |
| topic_facet |
Atmospheric turbulence Light modulators Optical communication Quantum computers Quantum entanglement Quantum optics Tomography Free-space transmission Optical architectures Phase-only Quantum channel Quantum Computing Quantum process tomography Quantum system Spatial light modulators Communication channels (information theory) |
| description |
In this Letter, we propose a simple optical architecture based on phase-only programmable spatial light modulators, in order to characterize general processes on photonic spatial quantum systems in a d > 2 Hilbert space. We demonstrate the full reconstruction of typical noises affecting quantum computing, such as amplitude shifts, phase shifts, and depolarizing channels in dimension d 5. We have also reconstructed simulated atmospheric turbulences affecting a free-space transmission of qudits in dimension d 4. In each case, quantum process tomography was performed in order to obtain the matrix χ that fully describes the corresponding quantum channel, E. Fidelities between the states are experimentally obtained after going through the channel, and the expected ones are above 97%. © 2018 Optical Society of America |
| title |
Characterizing d-dimensional quantum channels by means of quantum process tomography |
| title_short |
Characterizing d-dimensional quantum channels by means of quantum process tomography |
| title_full |
Characterizing d-dimensional quantum channels by means of quantum process tomography |
| title_fullStr |
Characterizing d-dimensional quantum channels by means of quantum process tomography |
| title_full_unstemmed |
Characterizing d-dimensional quantum channels by means of quantum process tomography |
| title_sort |
characterizing d-dimensional quantum channels by means of quantum process tomography |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01469592_v43_n18_p4398_Varga http://hdl.handle.net/20.500.12110/paper_01469592_v43_n18_p4398_Varga |
| _version_ |
1840322698320805888 |