Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Pickston, Alexander"'
Autor:
Ulibarrena, Andrés, Webb, Jonathan W., Pickston, Alexander, Ho, Joseph, Fedrizzi, Alessandro, Pozas-Kerstjens, Alejandro
Quantum networks connect and supply a large number of nodes with multi-party quantum resources for secure communication, networked quantum computing and distributed sensing. As these networks grow in size, certification tools will be required to answ
Externí odkaz:
http://arxiv.org/abs/2403.02376
Autor:
Webb, Jonathan W., Ho, Joseph, Grasselli, Federico, Murta, Gláucia, Pickston, Alexander, Ulibarrena, Andrés, Fedrizzi, Alessandro
Publikováno v:
Optica 11, 872 (2024)
Anonymous quantum conference key agreement (AQCKA) allows a group of users within a network to establish a shared cryptographic key without revealing their participation. Although this can be achieved using bi-partite primitives alone, it is costly i
Externí odkaz:
http://arxiv.org/abs/2311.14158
Autor:
Faleo, Tommaso, Brunner, Eric, Webb, Jonathan W., Pickston, Alexander, Ho, Joseph, Weihs, Gregor, Buchleitner, Andreas, Dittel, Christoph, Dufour, Gabriel, Fedrizzi, Alessandro, Keil, Robert
Entanglement and interference are both hallmark effects of quantum physics. Particularly rich dynamics arise when multiple (at least partially) indistinguishable particles are subjected to either of these phenomena. By combining both entanglement and
Externí odkaz:
http://arxiv.org/abs/2310.08630
Autor:
Chiriano, Fabrizio, Ho, Joseph, Morrison, Christopher L., Webb, Jonathan W., Pickston, Alexander, Graffitti, Francesco, Fedrizzi, Alessandro
Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols by allowing each DOF to perform the task it is optimally suited for. Here we demonstrate the generation of photon pairs hyper-entang
Externí odkaz:
http://arxiv.org/abs/2304.12195
Autor:
Pickston, Alexander, Ho, Joseph, Ulibarrena, Andrés, Grasselli, Federico, Proietti, Massimiliano, Morrison, Christopher L., Barrow, Peter, Graffitti, Francesco, Fedrizzi, Alessandro
Publikováno v:
npj Quantum Inf 9, 82 (2023)
Quantum conference key agreement (QCKA) allows multiple users to establish a secure key from a shared multi-partite entangled state. In a quantum network, this protocol can be efficiently implemented using a single copy of a N-qubit Greenberger-Horne
Externí odkaz:
http://arxiv.org/abs/2207.01643
Autor:
Morrison, Christopher L., Graffitti, Francesco, Barrow, Peter, Pickston, Alexander, Ho, Joseph, Fedrizzi, Alessandro
Frequency encoding is quickly becoming an attractive prospect for quantum information protocols owing to larger Hilbert spaces and increased resilience to noise compared to other photonic degrees of freedom. To fully make use of frequency encoding as
Externí odkaz:
http://arxiv.org/abs/2201.07259
Autor:
Ho, Joseph, Moreno, George, Brito, Samuraí, Graffitti, Francesco, Morrison, Christopher L., Nery, Ranieri, Pickston, Alexander, Proietti, Massimiliano, Rabelo, Rafael, Fedrizzi, Alessandro, Chaves, Rafael
Efficient distributed computing offers a scalable strategy for solving resource-demanding tasks such as parallel computation and circuit optimisation. Crucially, the communication overhead introduced by the allotment process should be minimised -- a
Externí odkaz:
http://arxiv.org/abs/2106.06552
Autor:
Pickston, Alexander, Graffitti, Francesco, Barrow, Peter, Morrison, Christopher, Ho, Joseph, Brańczyk, Agata M., Fedrizzi, Alessandro
The ideal photon-pair source for building up multi-qubit states needs to produce indistinguishable photons with high efficiency. Indistinguishability is crucial for minimising errors in two-photon interference, central to building larger states, whil
Externí odkaz:
http://arxiv.org/abs/2101.08280
Autor:
Graffitti, Francesco, Barrow, Peter, Pickston, Alexander, Brańczyk, Agata M., Fedrizzi, Alessandro
Publikováno v:
Phys. Rev. Lett. 124, 053603 (2020)
Photonic quantum technology increasingly uses frequency encoding to enable higher quantum information density and noise resilience. Pulsed time-frequency modes (TFM) represent a unique class of spectrally encoded quantum states of light that enable a
Externí odkaz:
http://arxiv.org/abs/1910.00598
Autor:
Graffitti, Francesco, Pickston, Alexander, Barrow, Peter, Proietti, Massimiliano, Kundys, Dmytro, Rosset, Denis, Ringbauer, Martin, Fedrizzi, Alessandro
Publikováno v:
Phys. Rev. Lett. 124, 010503 (2020)
The capability to reliably transmit and store quantum information is an essential building block for future quantum networks and processors. Gauging the ability of a communication link or quantum memory to preserve quantum correlations is therefore v
Externí odkaz:
http://arxiv.org/abs/1906.11130