Violation of no-signaling on a public quantum computer
arXiv:2409.11348 · doi:10.1002/qute.202400661
Abstract
No-signaling is a consequence of the no-communication theorem that states that bipartite systems cannot transfer information unless a communication channel exists. It is also a by-product of the assumptions of Bell theorem about quantum nonlocality. We have tested no-signaling in bipartite systems of qubits from IBM Quantum devices in extremely large statistics, resulting in significant violations. Although the time and space scales of IBM Quantum cannot in principle rule out subluminal communications, there is no obvious physical mechanism leading to signaling. The violation is also at similar level as observed in Bell tests. It is therefore mandatory to check possible technical imperfections that may cause the violation and to repeat the loophole-free Bell test at much larger statistics, in order to be ruled out definitively at strict spacelike conditions.
10 pages, 9 figures, the violation CANNOT be explained by a (simple) ZZ crosstalk, see detailed explanation https://www.fuw.edu.pl/~abednorz/bell/index.html
References in corpus (43)
- Charge insensitive qubit design derived from the Cooper pair box
- Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
- A Quantum Engineer's Guide to Superconducting Qubits
- Violation of Bell's inequality under strict Einstein locality conditions
- Significant-loophole-free test of Bell's theorem with entangled photons
- A strong loophole-free test of local realism
- Violation of Bell inequalities by photons more than 10 km apart
- Simple pulses for elimination of leakage in weakly nonlinear qubits
- Quantum Information and Relativity Theory
- Bell violation with entangled photons, free of the fair-sampling assumption
- Building logical qubits in a superconducting quantum computing system
- Efficient Z-Gates for Quantum Computing
- Detection-Loophole-Free Test of Quantum Nonlocality, and Applications
- Event-Ready Bell Test Using Entangled Atoms Simultaneously Closing Detection and Locality Loopholes
- Bell inequality violation with two remote atomic qubits
- Violation of local realism with freedom of choice
- Challenging local realism with human choices
- Analytic control methods for high fidelity unitary operations in a weakly nonlinear oscillator
- Loopholes in Bell Inequality Tests of Local Realism
- Effective Hamiltonian models of the cross-resonance gate
- Cosmic Bell Test: Measurement Settings from Milky Way Stars
- Cosmic Bell Test using Random Measurement Settings from High-Redshift Quasars
- Qiskit Pulse: Programming Quantum Computers Through the Cloud with Pulses
- First-principles analysis of cross-resonance gate operation
- Experimental test of Mermin inequalities on a 5-qubit quantum computer
- Open statistical issues in particle physics
- Test of the no-signaling principle in the Hensen "loophole-free CHSH experiment"
- Nonlocality from local contextuality
- Five Experimental Tests on the 5-Qubit IBM Quantum Computer
- Complementary contributions of indeterminism and signalling to quantum correlations
- Analysis of assumptions of recent tests of local realism
- Characterizing crosstalk of superconducting transmon processors
- A randomized benchmarking suite for mid-circuit measurements
- Is Einsteinian no-signalling violated in Bell Tests?
- Bounding the plausibility of physical theories in a device-independent setting via hypothesis testing
- Experimental test of the no signaling theorem
- Relativistic invariance of the vacuum
- Objective realism and freedom of choice in relativistic quantum field theory
- Testing a Bell Inequality with a Remote Quantum Processor
- Anomalous Postselection in the Hensen et al. Bell Test
- Experimental test of measurement dependent local Bell inequality with human free will
- Why quantum correlations are shocking
- Analysis of assumptions in BIG Bell Test experiments