The workshop aims at bringing together researchers from quantum computing and classical programming languages.
Optical coherence tomography (OCT) has been a key technology in medicine and biology [1]; however, the axial resolution has been limited to the order of 10 μm due to the dispersion. As an alternative technique, quantum optical coherence tomography (QOCT) has been demonstrated in 19-μm resolution and shows dispersion-tolerance by virtue of the quantum correlation of entangled photon pairs [2].
Strong interactions between light and atoms at the single-quantum level are an important ingredient for quantum technologies, and for studies of complex many-particle quantum systems. In this talk, I will describe the development of a novel experimental platform that allows for trapping a single rubidium atom in the evanescent mode of a nano-fabricated optical cavity with sub-wavelength dimensions.
Our fundamental understanding of the physical universe is governed by
two theories, quantum mechanics and general relativity. While there is
no unified theory of quantum gravity, the two fundamental theories
`peacefully coexist' in all experimentally feasible scenarios.
Nevertheless there are very few situations where both quantum and
general relativistic effects can be probed simultaneously. Experiments
involving photons are the most promising candidates for near-future
A game where Alice and Bob are separated, forbidden
to comunicate, receive inputs from the same input set I, and produce
outputs from the same output set O is called synchronous provided that
any time Alice and Bob receive the same input, they are required to
Although focus upon this material has diminished, superfluid Helium-3 (3He) remains by far the best-understood unconventional superconductor (superfluid). Moreover, it has recently re-emerged as a system of great theoretical interest because it is the only known odd-parity ‘topological' superfluid. In this reincarnation, it is a candidate for study of the zero-energy Bogoliubov states at superfluid boundaries since they can be viewed as ‘Majorana’ fermions.
The transverse spatial degree of freedom of light offers great potential to explore quantum informational tasks and interesting features of single photons and quantum entanglement. We developed novel methods to generate, investigate, and verify the entanglement of complex spatial structures. With these methods, we were able to entangle photons with up to 300 quanta of orbital angular momentum (OAM) and to image the effect of entanglement of twisted photons in real-time.
Quantum computers are poised to deliver a dramatic increase in computational power, which can be used to perform difficult tasks such as simulating molecules for medical research much more efficiently than any current computer. However, it is notoriously difficult to characterize what is needed for a quantum computer to be useful. In this talk I will show that two characteristic quantum phenomena, namely, negative probabilities and contextuality, are equivalent with respect to the stabilizer formalism for qudits (d odd prime).
Electron and nuclear spins of donors in silicon are promising candidates for representing quantum bits, with coherence times of up to 3 seconds for the electron spin [1], up to 3 minutes for the neutral donor nuclear spin [2], and 3 hours for the ionized donor nuclear spin [3]. Furthermore, single-shot readout of both the electron spin and nuclear spin have been demonstrated, with measurement fidelities of up to 99.8% [4].
Rydberg atoms are highly excited neutral atoms with exceptional properties. Not long ago, interest in Rydberg atoms was limited to their spectroscopic properties. However, in recent years, Rydberg science has become increasingly interdisciplinary. It is now a rapidly progressing research area at the crossroads of atomic, optical, condensed matter physics, and quantum information science with a host of possible applications.