Fidelity serves as a benchmark for the reliability in quantum information processes, and has
recently attracted much interest as a measure of the susceptibility of dynamics to …

Quantum computers [1–4] are explicitly quantum mechanical systems that use phenomena
such as superposition and entanglement to perform computational tasks more efficiently …

A critical question for quantum computing in the near future is whether quantum devices
without error correction can perform a well-defined computational task beyond the …

There are many excellent books on quantum theory from which one can learn to compute
energy levels, transition rates, cross sections, etc. The theoretical rules given in these books …

We investigate the quantum-chaotic properties of the Dicke Hamiltonian; a quantum-optical
model that describes a single-mode bosonic field interacting with an ensemble of N two …

Near term quantum computers with a high quantity (around 50) and quality (around 0.995
fidelity for two-qubit gates) of qubits will approximately sample from certain probability …

Classical simulations of quantum circuits are limited in both space and time when the qubit
count is above 50, the realm where quantum supremacy reigns. However, recently, for the …

The topic of quantum chaos has begun to draw increasing attention in recent years. While a
satisfactory definition for it is not settled yet in order to differentiate between its classical …

Quantum computation has achieved a tremendous success during the last decades. In this
paper, we investigate the potential application of a famous quantum computation model, ie …

This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin
systems an interpretation in terms of quantum chaos of the kicked top. In particular, for DQS …