Conveners
Reference Frames, Relativity and Gravity in QM
- Ruediger Schack (Royal Holloway University of London)
Reference Frames, Relativity and Gravity in QM
- Eugene Polzik
The covariance of physical laws in quantum reference frames
In our laboratories, we perform experiments with single quantum particles which can be in a superposition of different states or entangled with other particles, showing features which are strikingly different to the classical world. What would be the description of the world, if we could "sit" on a particle that is in a superposition...
At a fundamental level Quantum mechanics dictates that a measurement corresponds to a physical process generating entanglement among the measured object and the measurement apparatus (and possibly the rest of the world). This entanglement inevitably results in a disturbance of the measured system - the famous Measurement Back Action in Quantum Mechanics. Measurement Back Action may become the...
There is a strong tradition in epistemology that represents an agent's belief and knowledge via the task of self-location within a set of possible worlds. For the case of an agent's beliefs, the idea is, briefly, as follows: There is a set of possible worlds ("centered" complete epistemic possibilities including the agent's current place and time). Only some of those worlds are compatible with...
I will discuss the challenges and prospects for isolating and exploring gravity as a relevant coupling mechanism in table-top quantum experiments. This includes quantum limits on the metric generated by a quantum source mass and possible schemes to measure it. Experimentally, a central role is played by the possibility to achieve quantum control over motional states of levitated solid-state particles.
The notion of device-independent certification started in the context of key distribution, and has expanded to several similar tasks. But it has also led to interesting foundational results, notably by looking at quantum correlations as a special case of no-signaling ones, but also in signaling models. My talk will be a series of snapshots devoted to these results.
Quantum teleportation is one of the fundamental building blocks of quantum Shannon theory. While ordinary teleportation is simple and efficient, port-based teleportation (PBT) enables applications such as universal programmable quantum processors, instantaneous non-local quantum computation and attacks on position-based quantum cryptography. In this work, we determine the fundamental limit on...
