Modelling Quantum Devices and the Reconstruction of Physics in Practical Systems
arXiv:1910.02177 · doi:10.1103/PhysRevLett.123.140405
Abstract
Modelling quantum devices is to find a model according to quantum theory that can explain the result of experiments in a quantum device. We find that usually we cannot correctly identify the model describing the actual physics of the device regardless of the experimental effort given a limited set of operations. According to sufficient conditions that we find, correctly reconstructing the model requires either a particular set of pure states and projective measurements or a set of evolution operators that can generate all unitary operators.
arXiv comment12 pages, 2 figures
References in corpus (16)
- Randomized Benchmarking of Quantum Gates
- Prescription for experimental determination of the dynamics of a quantum black box
- Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate
- High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
- Quantum Teleportation Between Distant Matter Qubits
- Practical Quantum Error Mitigation for Near-Future Applications
- Scalable Noise Estimation with Random Unitary Operators
- 10-qubit entanglement and parallel logic operations with a superconducting circuit
- Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography
- Non-Markovian quantum processes: complete framework and efficient characterisation
- Self-Consistent Quantum Process Tomography
- Dividing Quantum Channels
- Dynamics of initially entangled open quantum systems
- Certifying the building blocks of quantum computers from Bell's theorem
- Quantum Process Fidelity Bounds from Sets of Input States
- Practical and reliable error bars for quantum process tomography