50 citations · 89 across the 10 of their papers we have counts for
12 papers
How Quantum Agents Can Change Which Strategies Are More Complex
Spiros Kechrimparis, Nix Barnett, Mile Gu +1
Whether winning blackjack or navigating busy streets, achieving desired outcomes requires agents to execute adaptive strategies, strategies where actions depend contextually on pas…
Probabilistic Channel Distillation via Indefinite Causal Order
Spiros Kechrimparis, James Moran, Hyukjoon Kwon
The quantum switch has been widely studied as a prototypical example of indefinite causal order in quantum information processing. However, the potential advantages of utilising mo…
Near-optimal coherent state discrimination via continuously labelled non-Gaussian measurements
James Moran, Spiros Kechrimparis, Hyukjoon Kwon
Quantum state discrimination plays a central role in quantum information and communication. For the discrimination of optical quantum states, the two most widely adopted measuremen…
Enhancing Quantum State Discrimination with Indefinite Causal Order
Spiros Kechrimparis, James Moran, Athena Karsa +2
The standard quantum state discrimination problem can be understood as a communication scenario involving a sender and a receiver following these three steps: (i) the sender encode…
Causal Asymmetry of Classical and Quantum Autonomous Agents
Spiros Kechrimparis, Mile Gu, Hyukjoon Kwon
Why is it that a ticking clock typically becomes less accurate when subject to outside noise but rarely the reverse? Here, we formalize this phenomenon by introducing process causa…
Optimal measurement preserving qubit channels
Spiros Kechrimparis, Joonwoo Bae
We consider the problem of discriminating qubit states that are sent over a quantum channel and derive a necessary and sufficient condition for an optimal measurement to be preserv…
Measurement-Protected Quantum Key Distribution
Spiros Kechrimparis, Heasin Ko, Young-Ho Ko +5
In the distribution of quantum states over a long distance, not only are quantum states corrupted by interactions with an environment but also a measurement setting should be re-al…
Channel Coding of a Quantum Measurement
Spiros Kechrimparis, Chahan M. Kropf, Filip Wudarski +1
In this work, we consider the preservation of a measurement for quantum systems interacting with an environment. Namely, a method of preserving an optimal measurement over a channe…
Preserving Measurements for Optimal State Discrimination over Quantum Channels
Spiros Kechrimparis, Tanmay Singal, Chahan M. Kropf +1
In this work, we consider optimal state discrimination for a quantum system that interacts with an environment, i.e., states evolve under a quantum channel. We show the conditions…
Geometry of Uncertainty Relations for Linear Combinations of Position and Momentum
Spiros Kechrimparis, Stefan Weigert
For a quantum particle with a single degree of freedom, we derive preparational sum and product uncertainty relations satisfied by linear combinations of position and momentum…
Universality in Uncertainty Relations for a Quantum Particle
Spiros Kechrimparis, Stefan Weigert
A general theory of preparational uncertainty relations for a quantum particle in one spatial dimension is developed. We derive conditions which determine whether a given smooth fu…
Heisenberg Uncertainty Relation for Three Canonical Observables
Spiros Kechrimparis, Stefan Weigert
Uncertainty relations provide fundamental limits on what can be said about the properties of quantum systems. For a quantum particle, the commutation relation of position and momen…