Testing quantum theory on curved space-time with quantum networks
arXiv:2406.19533 · doi:10.1103/PhysRevResearch.7.023192
Abstract
Quantum technologies present new opportunities for fundamental tests of nature. One potential application is to probe the interplay between quantum physics and general relativity - a field of physics with no empirical evidence yet. Here we show that quantum networks open a new window to test this interface. We demonstrate how photon mediated entanglement between atomic or atom-like systems can be used to probe time-dilation induced entanglement and interference modulation. Key are non-local measurements between clocks in a gravitational field, which can be achieved either through direct photon interference or by using auxiliary entanglement. The resulting observable depends on the interference between different proper times, and can only be explained if both quantum theory and general relativity are taken into account. The proposed protocol enables clock interferometry on km-scale separations and beyond. Our work thus shows a realistic experimental route for a first test of quantum theory on curved space-time, opening up new scientific opportunities for quantum networks.
13 pages, 3 figures, 2 Appendices
References in corpus (56)
- Heralded entanglement between solid-state qubits separated by 3 meters
- An Elementary Quantum Network of Single Atoms in Optical Cavities
- Satellite-relayed intercontinental quantum network
- A quantum network of clocks
- Realization of a multi-node quantum network of remote solid-state qubits
- Quantum repeaters: From quantum networks to the quantum internet
- Resolving the gravitational redshift within a millimeter atomic sample
- Distributed quantum sensing in a continuous variable entangled network
- Reversible state transfer between light and a single trapped atom
- Entanglement of Nanophotonic Quantum Memory Nodes in a Telecom Network
- Micius quantum experiments in space
- Quantum networks based on color centers in diamond
- Universal decoherence due to gravitational time dilation
- Advances in Space Quantum Communications
- Quantum interferometric visibility as a witness of general relativistic proper time
- Randomized benchmarking of single qubit gates in a 2D array of neutral atom qubits
- Robust creation of entanglement between ions in spatially separate cavities
- A Quantum-Logic Gate between Distant Quantum-Network Modules
- A clock with systematic uncertainty
- Fundamental quantum optics experiments conceivable with satellites -- reaching relativistic distances and velocities
- High precision differential clock comparisons with a multiplexed optical lattice clock
- A multinode quantum network over a metropolitan area
- Probing gravity by holding atoms for 20 seconds
- Testing gravity with cold atom interferometry: Results and prospects
- Assembly and coherent control of a register of nuclear spin qubits
- Universal gate operations on nuclear spin qubits in an optical tweezer array of Yb atoms
- A quantum network of entangled optical atomic clocks
- General relativistic effects in quantum interference of photons
- Quantum sensing with atomic, molecular, and optical platforms for fundamental physics
- An atomic array optical clock with single-atom readout
- Metropolitan-scale heralded entanglement of solid-state qubits
- Quantum clocks observe classical and quantum time dilation
- A self-interfering clock as a "which path" witness
- Two clock transitions in neutral Yb for the highest sensitivity to variations of the fine-structure constant
- Gravitational redshift in quantum-clock interferometry
- Tutorial: Remote entanglement protocols for stationary qubits with photonic interfaces
- Post-Newtonian Hamiltonian description of an atom in a weak gravitational field
- Telecom-band quantum optics with ytterbium atoms and silicon nanophotonics
- Interference of Clocks: A Quantum Twin Paradox
- Experimental entanglement of 25 individually accessible atomic quantum interfaces
- Equivalence Principle for Quantum Systems: Dephasing and Phase Shift of Free-Falling Particles
- The thermodynamics of clocks
- Atom Interferometers and the Gravitational Redshift
- Gravitational mass of composite systems
- Long-distance entanglement distribution using individual atoms in optical cavities
- Post-Newtonian gravitational effects in quantum interferometry
- Entanglement decoherence in a gravitational well according to the event formalism
- Universal quantum modifications to general relativistic time dilation in delocalised clocks
- Single electron relativistic clock interferometer
- Classical and Nonclassical Time Dilation for Quantum Clocks
- A blueprint for a simultaneous test of quantum mechanics and general relativity in a space-based quantum optics experiment
- Quantum complementarity of clocks in the context of general relativity
- Single-photon interference over 8.4 km urban atmosphere: towards testing quantum effects in curved spacetime with photons
- Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth
- Exploring the dynamical interplay between mass-energy equivalence, interactions and entanglement in an optical lattice clock
- A coupling prescription for post-Newtonian corrections in Quantum Mechanics