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7 papers · 2 filters
Minimising the heat dissipation of quantum information erasure
M. Hamed Mohammady, Masoud Mohseni, Yasser Omar
Quantum state engineering and quantum computation rely on information erasure procedures that, up to some fidelity, prepare a quantum object in a pure state. Such processes occur w…
Spatial search by quantum walk is optimal for almost all graphs
Shantanav Chakraborty, Leonardo Novo, Andris Ambainis +1
The problem of finding a marked node in a graph can be solved by the spatial search algorithm based on continuous-time quantum walks (CTQW). However, this algorithm is known to run…
Transport of quantum excitations coupled to spatially extended nonlinear many-body systems
Stefano Iubini, Octavi Boada, Yasser Omar +1
The role of noise in the transport properties of quantum excitations is a topic of great importance in many fields, from organic semiconductors for technological applications to li…
Degradation of entanglement between two accelerated parties: Bell states under the Unruh effect
Benedikt Richter, Yasser Omar
We study the entanglement of families of Unruh modes in the Bell states and …
Quantum walks in synthetic gauge fields with 3D integrated photonics
Octavi Boada, Leonardo Novo, Fabio Sciarrino +1
There is great interest in designing photonic devices capable of disorder-resistant transport and information processing. In this work we propose to exploit 3D integrated photonic…
Complete positivity and thermodynamics in a driven open quantum system
G. Argentieri, F. Benatti, R. Floreanini +1
While it is well known that complete positivity guarantees the fulfilment of the second law of thermodynamics, its possible violations have never been proposed as a check of the co…