Parameterized quantum comb and simpler circuits for reversing unknown
qubit-unitary operations
- URL: http://arxiv.org/abs/2403.03761v1
- Date: Wed, 6 Mar 2024 14:53:24 GMT
- Title: Parameterized quantum comb and simpler circuits for reversing unknown
qubit-unitary operations
- Authors: Yin Mo, Lei Zhang, Yu-Ao Chen, Yingjian Liu, Tengxiang Lin, Xin Wang
- Abstract summary: PQComb is a framework leveraging parameterized quantum circuits to explore the capabilities of quantum combs.
We develop a protocol for unknown qubit unitary inversion that reduces the ancilla qubit overhead from 6 to 3.
Our results pave the way for broader PQComb applications in quantum computing and quantum information.
- Score: 8.630679964089696
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum comb is an essential tool for characterizing complex quantum
protocols in quantum information processing. In this work, we introduce PQComb,
a framework leveraging parameterized quantum circuits to explore the
capabilities of quantum combs for general quantum process transformation tasks
and beyond. By optimizing PQComb for time-reversal simulations of unknown
unitary evolutions, we develop a simpler protocol for unknown qubit unitary
inversion that reduces the ancilla qubit overhead from 6 to 3 compared to the
existing method in [Yoshida, Soeda, Murao, PRL 131, 120602, 2023]. This
demonstrates the utility of quantum comb structures and showcases PQComb's
potential for solving complex quantum tasks. Our results pave the way for
broader PQComb applications in quantum computing and quantum information,
emphasizing its versatility for tackling diverse problems in quantum machine
learning.
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