In the past decade, the toolkit of quantum information has been expanded to include
processes in which the basic operations do not have definite causal relations. Originally …

Overcoming the influence of noise and imperfections is a major challenge in quantum
computing. Here, we present an approach based on applying a desired unitary computation …

An asymmetric bidirectional quantum teleportation scheme was proposed by utilizing a
seven-qubit entangled state as quantum channel. The scheme can perfectly achieve the …

Variational quantum eigensolvers (VQEs) are successful algorithms for studying physical
systems on quantum computers. Recently, they were extended to the measurement-based …

Dephasing is a main noise mechanism that afflicts quantum information, it reduces visibility,
and destroys coherence and entanglement. Therefore, it must be reduced, mitigated, and, if …

In a conventional circuit for quantum machine learning, the quantum gates used to encode
the input parameters and the variational parameters are constructed with a fixed order. The …

Entanglement purification and distillation protocols are essential for harnessing the full
potential of quantum communication technologies. Multiple strategies have been proposed …

We describe a quantum variational algorithm for securities transactions settlement
optimization, based on a novel mathematical formalization of the problem that includes the …

We develop an optimized hardware strategy to mitigate errors in a noisy qubit. Our scheme
builds on the physical principle of error filtration and exploits auxiliary qubits. Both signal …

Dephasing is a main noise mechanism that afflicts quantum information, it reduces visibility,
and destroys coherence and entanglement. Here we propose a hardware scheme to …