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https://hdl.handle.net/10356/141933
Title: | Witnessing quantum resource conversion within deterministic quantum computation using one pure superconducting qubit | Authors: | Wang, Weiting Han, J. Yadin, Benjamin Ma, Yuwei Ma, Jiajun Cai, Weizhou Xu, Yong Hu, Ling Wang, Haiyan Song, Yi Pu Gu, Mile Sun, Luyan |
Keywords: | Science::Physics | Issue Date: | 2019 | Source: | Wang, W., Han, J., Yadin, B., Ma, Y., Ma, J., Cai, W., . . . Sun, L. (2019). Witnessing quantum resource conversion within deterministic quantum computation using one pure superconducting qubit. Physical Review Letters, 123(22), 220501-. doi:10.1103/physrevlett.123.220501 | Journal: | Physical Review Letters | Abstract: | Deterministic quantum computation with one qubit (DQC1) is iconic in highlighting that exponential quantum speedup may be achieved with negligible entanglement. Its discovery catalyzed a heated study of general quantum resources, and various conjectures regarding their role in DQC1's performance advantage. Coherence and discord are prominent candidates, respectively, characterizing nonclassicality within localized and correlated systems. Here we realize DQC1 within a superconducting system, engineered such that the dynamics of coherence and discord can be tracked throughout its execution. We experimentally confirm that DQC1 acts as a resource converter, consuming coherence to generate discord during its operation. Our results highlight superconducting circuits as a promising platform for both realizing DQC1 and related algorithms, and experimentally characterizing resource dynamics within quantum protocols. | URI: | https://hdl.handle.net/10356/141933 | ISSN: | 0031-9007 | DOI: | 10.1103/PhysRevLett.123.220501 | Schools: | School of Physical and Mathematical Sciences | Organisations: | Complexity Institute | Rights: | © 2019 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | SPMS Journal Articles |
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Witnessing Quantum Resource Conversion within Deterministic Quantum Computation Using One Pure Superconducting Qubit.pdf | 504.25 kB | Adobe PDF | View/Open |
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