Capturing the Page Curve and Entanglement Dynamics of Black Holes in Quantum Computers - INSPIRE

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Capturing the Page Curve and Entanglement Dynamics of Black Holes in Quantum Computers

Talal Ahmed Chowdhury
(
- Dhaka U. and
- U. Kansas, Lawrence
)
,
Kwangmin Yu
(
- Brookhaven Natl. Lab.
)
,
Muhammad Asaduzzaman
(
- Iowa U.
)
,
Raza Sabbir Sufian
(
- New Mexico State U. and
- RIKEN BNL and
- Brookhaven
)

Dec 19, 2024

e-Print:

2412.15180 [quant-ph]

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Abstract: (arXiv)

Understanding the Page curve and resolving the black hole information puzzle in terms of the entanglement dynamics of black holes has been a key question in fundamental physics. In principle, the current quantum computing can provide insights into the entanglement dynamics of black holes within some simplified models. In this regard, we utilize quantum computers to investigate the entropy of Hawking radiation using the qubit transport model, a toy qubit model of black hole evaporation. Specifically, we implement the quantum simulation of the scrambling dynamics in black holes using an efficient random unitary circuit. Furthermore, we employ the swap-based many-body interference protocol for the first time and the randomized measurement protocol to measure the entanglement entropy of Hawking radiation qubits in IBM's superconducting quantum computers. Our findings indicate that while both entanglement entropy measurement protocols accurately estimate the Rényi entropy in numerical simulation, the randomized measurement protocol has a particular advantage over the swap-based many-body interference protocol in IBM's superconducting quantum computers. Finally, by incorporating quantum error mitigation techniques, we establish that the current quantum computers are robust tools for measuring the entanglement entropy of complex quantum systems and can probe black hole dynamics within simplified toy qubit models.

Note:

Additional discussion in section V.B.2, typos corrected

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Figures(6)

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