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SUMMARY:Integrated quantum photonics in femtosecond-laser-written devices
DTSTART;VALUE=DATE-TIME:20211015T092000Z
DTEND;VALUE=DATE-TIME:20211015T094500Z
DTSTAMP;VALUE=DATE-TIME:20260608T015854Z
UID:indico-contribution-90-403@cern.ch
DESCRIPTION:Speakers: Roberto Osellame (IFN-CNR)\nIntegrated photonics is 
 a key enabler for quantum technologies\, with significant improvements int
 roduced in quantum computing\, sensing and communications. Femtosecond las
 er writing of photonic circuits brings key advantages in terms of unpreced
 ented 3D circuit layouts\, possibility to manipulate polarization encoding
 \,  multimaterial devices and rapid prototyping. All these advantages are 
 widely exploited in integrated quantum photonics applications and a few ex
 amples will be reviewed in this presentation. Progress towards the specifi
 c goal of developing a complete quantum photonic platform encompassing all
  the relevant functionalities will be discussed.\n\nhttps://indico.unina.i
 t/event/52/contributions/403/
LOCATION:
URL:https://indico.unina.it/event/52/contributions/403/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Speeding up quantum annealing: schedule engineering and optimal dr
 iving
DTSTART;VALUE=DATE-TIME:20211015T103500Z
DTEND;VALUE=DATE-TIME:20211015T110000Z
DTSTAMP;VALUE=DATE-TIME:20260608T015854Z
UID:indico-contribution-90-414@cern.ch
DESCRIPTION:Speakers: Gianluca Passarelli (CNR-SPIN Napoli)\nShortcuts to 
 adiabaticity in adiabatic quantum computation can be realized either by op
 timal designs of the annealing schedules or by using external control fiel
 ds\, such as counterdiabatic (CD) driving operators. I will discuss how ge
 netic algorithms can help in determining optimal annealing schedules. Seco
 ndly\, I will introduce the variational approach to CD driving in closed q
 uantum systems to build approximate CD operators\, satisfying locality con
 straints. Finally\, I will discuss a generalization of the variational app
 roach to open quantum systems.\n\n 1. P. R. Hegde\, GP\, A. Scocco\, P. Lu
 cignano\, arXiv:2108.03185 (2021)\n 2. GP\, V. Cataudella\, R. Fazio\, P. 
 Lucignano\, PRResearch 2\, 013283 (2020)\n 3. GP\, R. Fazio\, P. Lucignano
 \, arXiv:2109.13043 (2021)\n\nhttps://indico.unina.it/event/52/contributio
 ns/414/
LOCATION:
URL:https://indico.unina.it/event/52/contributions/414/
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BEGIN:VEVENT
SUMMARY:Trapped ions for hybrid quantum systems
DTSTART;VALUE=DATE-TIME:20211015T101000Z
DTEND;VALUE=DATE-TIME:20211015T103500Z
DTSTAMP;VALUE=DATE-TIME:20260608T015854Z
UID:indico-contribution-90-413@cern.ch
DESCRIPTION:Speakers: Lucia Duca (INRiM / LENS)\nUltracold atoms and trapp
 ed ions have proven to be valuable resources for getting new insights on f
 undamental physical phenomena. Trapped ions can be individually addressed 
 and coherently manipulated. Ultracold gases\, instead\, provide large atom
 ic samples where trapping potentials and interactions are controlled exter
 nally\, making them well suited for systematic studies of many-body quantu
 m phenomena. An atom-ion hybrid system brings together the advantages of e
 ach physical system and provides an ideal platform to investigate fundamen
 tal quantum mechanics\, like localized impurities in a Fermi gas. Here we 
 present the first step towards the realization of such hybrid system: the 
 trapping of Ba ions\, together with the current state of advancement of th
 e apparatus that will allow us to reach coherent atom-ion coupling.\n\nhtt
 ps://indico.unina.it/event/52/contributions/413/
LOCATION:
URL:https://indico.unina.it/event/52/contributions/413/
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BEGIN:VEVENT
SUMMARY:Fundamental thresholds of realistic quantum error correction circu
 its from classical spin models
DTSTART;VALUE=DATE-TIME:20211015T094500Z
DTEND;VALUE=DATE-TIME:20211015T101000Z
DTSTAMP;VALUE=DATE-TIME:20260608T015854Z
UID:indico-contribution-90-412@cern.ch
DESCRIPTION:Speakers: Davide Vodola ()\nMapping quantum error correcting c
 odes to classical statistical mechanics models has proven a powerful tool 
 to study the fundamental error thresholds of quantum error correcting code
 s under phenomenological noise models. In this work\, we extend this mappi
 ng to realistic faulty quantum circuits by deriving the associated strongl
 y correlated classical spin models for the example of a quantum repetition
  code. We then use Monte-Carlo simulations to study the resulting phase di
 agram of the associated interacting spin model and benchmark our results a
 gainst a minimum-weight perfect matching decoder. The presented method pro
 vides an avenue to assess the fundamental thresholds of QEC codes and asso
 ciated readout circuitry\, independent of specific decoding strategies\, a
 nd can thereby help guiding the development of near-term QEC hardware.\n\n
 https://indico.unina.it/event/52/contributions/412/
LOCATION:
URL:https://indico.unina.it/event/52/contributions/412/
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