Unit of quantum information
A qutrit (or quantum trit ) is a unit of quantum information that is realized by a 3-level quantum system, that may be in a superposition of three mutually orthogonal quantum states .[ 1]
The qutrit is analogous to the classical radix -3 trit , just as the qubit , a quantum system described by a superposition of two orthogonal states, is analogous to the classical radix-2 bit .
There is ongoing work to develop quantum computers using qutrits[ 2] [ 3] [ 4] and qudits in general.[ 5] [ 6] [ 7]
^ Nisbet-Jones, Peter B. R.; Dilley, Jerome; Holleczek, Annemarie; Barter, Oliver; Kuhn, Axel (2013). "Photonic qubits, qutrits and ququads accurately prepared and delivered on demand" . New Journal of Physics . 15 (5): 053007. arXiv :1203.5614 . Bibcode :2013NJPh...15e3007N . doi :10.1088/1367-2630/15/5/053007 . ISSN 1367-2630 . S2CID 110606655 .
^ Yurtalan, M. A.; Shi, J.; Kononenko, M.; Lupascu, A.; Ashhab, S. (2020-10-27). "Implementation of a Walsh-Hadamard Gate in a Superconducting Qutrit" . Physical Review Letters . 125 (18): 180504. arXiv :2003.04879 . Bibcode :2020PhRvL.125r0504Y . doi :10.1103/PhysRevLett.125.180504 . PMID 33196217 . S2CID 128064435 .
^ Morvan, A.; Ramasesh, V. V.; Blok, M. S.; Kreikebaum, J. M.; O’Brien, K.; Chen, L.; Mitchell, B. K.; Naik, R. K.; Santiago, D. I.; Siddiqi, I. (2021-05-27). "Qutrit Randomized Benchmarking" . Physical Review Letters . 126 (21): 210504. arXiv :2008.09134 . Bibcode :2021PhRvL.126u0504M . doi :10.1103/PhysRevLett.126.210504 . hdl :1721.1/143809 . PMID 34114846 . S2CID 221246177 .
^ Goss, Noah; Morvan, Alexis; Marinelli, Brian; Mitchell, Bradley K.; Nguyen, Long B.; Naik, Ravi K.; Chen, Larry; Jünger, Christian; Kreikebaum, John Mark; Santiago, David I.; Wallman, Joel J.; Siddiqi, Irfan (2022-12-05). "High-fidelity qutrit entangling gates for superconducting circuits" . Nature Communications . 13 (1): 7481. arXiv :2206.07216 . Bibcode :2022NatCo..13.7481G . doi :10.1038/s41467-022-34851-z . ISSN 2041-1723 . PMC 9722686 . PMID 36470858 .
^ "Qudits: The Real Future of Quantum Computing?" . IEEE Spectrum . 28 June 2017. Retrieved 2021-05-24 .
^ Fischer, Laurin E.; Chiesa, Alessandro; Tacchino, Francesco; Egger, Daniel J.; Carretta, Stefano; Tavernelli, Ivano (2023-08-28). "Universal Qudit Gate Synthesis for Transmons" . PRX Quantum . 4 (3): 030327. arXiv :2212.04496 . Bibcode :2023PRXQ....4c0327F . doi :10.1103/PRXQuantum.4.030327 . S2CID 254408561 .
^ Nguyen, Long B.; Goss, Noah; Siva, Karthik; Kim, Yosep; Younis, Ed; Qing, Bingcheng; Hashim, Akel; Santiago, David I.; Siddiqi, Irfan (2023-12-29). "Empowering high-dimensional quantum computing by traversing the dual bosonic ladder". arXiv :2312.17741 [quant-ph ].