Experimental QND measurements of complementarity on two-qubit states with IonQ and IBM Q quantum computers
arXiv:2105.06368 · doi:10.1007/s11128-021-03354-z
Abstract
We report the experimental nondemolition measurement of coherence, predictability and concurrence on a system of two qubits. The quantum circuits proposed by De Melo et al. are implemented on IBM Q (superconducting circuit) and IonQ (trapped ion) quantum computers. Three criteria are used to compare the performance of the different machines on this task: measurement accuracy, nondemolition of the observable, and quantum state preparation. We find that the IonQ quantum computer provides constant state fidelity through the nondemolition process, outperforming IBM Q systems on which the fidelity consequently drops after the measurement. Our study compares the current performance of these two technologies at different stages of the nondemolition measurement of bipartite complementarity.
References in corpus (20)
- Quantum entanglement
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Surface codes: Towards practical large-scale quantum computation
- On the Measurement of Qubits
- Experimental Comparison of Two Quantum Computing Architectures
- Benchmarking an 11-qubit quantum computer
- Detecting bit-flip errors in a logical qubit using stabilizer measurements
- Back-action Evading Measurements of Nanomechanical Motion
- Entanglement in a 20-Qubit Superconducting Quantum Computer
- Quantum Non-demolition Measurements on Qubits
- Repetitive single electron spin readout in silicon
- Optical Backaction-Evading Measurement of a Mechanical Oscillator
- Bell State Preparation using Pulsed Non-Degenerate Two-Photon Entanglement
- Quantum Non-Demolition Test of Bipartite Complementarity
- Evidence of the entanglement constraint on wave-particle duality using the IBM Q quantum computer
- Simulation of wave-particle duality in multi-path interferometers on a quantum computer
- Fast entangling gates in long ion chains
- Measuring entanglement of a rank-2 mixed state prepared on a quantum computer
- Testing complementarity on a transmon quantum processor
- On the power quantum computation over real Hilbert spaces