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Updated: Sep 13, 2025
05:45
Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging
Published on: March 31, 2022
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Essay: Emergent Holographic Spacetime from Quantum Information.
1Inamori Research Institute for Science, Yukawa Institute for Theoretical Physics, Center for Gravitational Physics and Quantum Information, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan and , 620 Suiginya-cho, Shimogyo-ku, Kyoto 600-8411, Japan.
Physical Review Letters
|July 31, 2025
Summary
Holographic duality links gravity and quantum systems. Quantum information explains how spacetime geometry emerges from entangled qubits, guiding research toward quantum gravity.
Area of Science:
- Quantum Gravity
- String Theory
- Quantum Information Theory
Background:
- Holographic duality connects gravitational theories with quantum many-body systems.
- Quantum information theory is key to linking microscopic quantum structures with spacetime geometry.
- Entanglement entropy in quantum systems corresponds to extremal surface areas in gravitational spacetimes.
Purpose of the Study:
- Discuss open problems and future prospects in holographic duality and quantum gravity.
- Explore the relationship between quantum circuits and holographic spacetimes.
- Extend holography to cosmological spacetimes and investigate the emergence of time.
Main Methods:
- Utilizing quantum complexity theories to understand quantum circuits corresponding to holographic spacetimes.
- Studying concrete examples of holography within string theory.
- Applying quantum information concepts, including pseudoentropy and timelike entanglement, to explore emergent time.
Main Results:
- Gravitational spacetimes can emerge from large numbers of entangled qubits.
- Entanglement entropy provides a calculable link between quantum systems and spacetime geometry.
- Quantum information offers tools to extend holography and understand emergent time.
Conclusions:
- Further research is needed to fully understand quantum gravity through holographic principles.
- Connecting quantum circuits to specific holographic spacetimes is a crucial next step.
- Pseudoentropy and timelike entanglement are proposed as valuable tools for exploring emergent time in cosmology.
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