With the development of photonic quantum technologies, single photons have become key
for various applications including quantum communication and quantum computing …

Large-scale quantum effects have always played an important role in the foundations of
quantum theory. With recent experimental progress and the aspiration for quantum …

We propose a protocol to realize nonadiabatic geometric quantum computation of small-
amplitude Schrödinger cat qubits via invariant-based reverse engineering. We consider a …

We perform quantum key distribution (QKD) over a single fibre in the presence of four
classical channels in a C-band dense wavelength division multiplexing (DWDM) …

Inspired by the recent remarkable progress in the experimental test of local realism, we
report here such a test that achieves an efficiency greater than (78%) 2 for entangled photon …

Schrödinger's famous thought experiment involves a (macroscopic) cat whose quantum
state becomes entangled with that of a (microscopic) decaying nucleus. The creation of such …

Quantum theory is often presented as the theory describing the microscopic world, and
admittedly, it has done this extremely well for decades. Nonetheless, the question of whether …

The conceptual elements of quantum theory that now underlie our picture of the physical
world include objective chance, quantum interference, and the objective indefiniteness of …

Quantum entanglement was termed “spooky action at a distance” in the well-known paper
by Einstein, Podolsky, and Rosen. Entanglement is expected to be distributed over longer …

To investigate von Neumann's proposal that an “extra-physical process” is involved in the
measurement of a quantum system, an online experiment was conducted using a double-slit …