Discover and read the best of Twitter Threads about #qupa
Most recents (4)
Now at #QuPa (at @InHenriPoincare), Giacomo Mauro D’Ariano from @unipv on “re-establiching Causality”
#LTQI
#LTQI
@InHenriPoincare @unipv Giacomo Mauro D’Ariano: Causality is a theorem of quantum theory. The theorem is actually trivial (in terms of circuits) in the OPT formulation of quantum mechanics.
“The probability of preparation is independent of the choice of observation”
#LTQI #QuPa
#LTQI #QuPa
“The probability of preparation is independent of the choice of observation”
#LTQI #QuPa
#LTQI #QuPa
@InHenriPoincare @unipv Giacomo Mauro D’Ariano’s opinion paper [sic] is available at arxiv:1804.10810 arxiv.org/abs/1804.10810
#LTQI #QuPa
#LTQI #QuPa
Now at #QuPa (at @InHenriPoincare), Anup Prakash from @IRIF_Paris
on “Quantum Linear Systems with QRAM data structure”
#LTQI
on “Quantum Linear Systems with QRAM data structure”
#LTQI
@InHenriPoincare @IRIF_Paris Anupam Prakash uses the HHL algroithm ( @quantum_aram Hassidim Lloyd). Its running time (with improvement) is O(sκ poly(1/ε)):
κ: condition number
s: sparsity
#LTQI #QuPa
κ: condition number
s: sparsity
#LTQI #QuPa
@InHenriPoincare @IRIF_Paris @quantum_aram Anupam Prakash: presents an algorithm with improved dependence on sparsity. (quatuified thorugh a µ(A) which I didn’t understand. Check his recent papers with Iordanis Kerenidis for details)
#LTQI #QuPa
#LTQI #QuPa
Now at #QuPa (at @InHenriPoincare) Carlo Maria Scandolo from @CompSciOxford on “Microcanonical thermodynamics in general physical theories”
#LTQI
#LTQI
@InHenriPoincare @CompSciOxford Carlo MAria Scandolo’s use the tools of resource theories, were some resources are free and others are costly.
Free resources induce a preorder: A more valuable then B if A –free→ B.
It describes allowed thermodynamics transitions
#LTQI #QuPa
Free resources induce a preorder: A more valuable then B if A –free→ B.
It describes allowed thermodynamics transitions
#LTQI #QuPa
@InHenriPoincare @CompSciOxford Carlo Maria Scandolo: A test is a collection of porcesses {C_i} with input A and B. A—[{C_i}]—B
Channel=deterministic test. Some are reversible.
State=test with no input
Observation test: test with no outputs
#LTQI #QuPa
Channel=deterministic test. Some are reversible.
State=test with no input
Observation test: test with no outputs
#LTQI #QuPa
Now at #QuPa (at @InHenriPoincare), Bruno Laburthe-Tolra from @univ_paris13 on “Some aspects of quantum simulation using cold atoms”
#LTQI
#LTQI
@InHenriPoincare @univ_paris13 Bruno Laburthe-Tolra: works with quantum gases, with density 10¹²–10¹⁵ at/cm³, at nK or µK, with de Broglie wavelengths and inter-atomic distance > 100nm.
These systems (boson or fermions) are “clean” analogues of condensed matter systems.
#QuPa #LTQI
These systems (boson or fermions) are “clean” analogues of condensed matter systems.
#QuPa #LTQI
@InHenriPoincare @univ_paris13 Bruno Laburthe-Tolra: Optical lattices are periodic (spin indeendent) potentials induced by stationary optical waves. This allows to make 1D, 2D and 3D potential, making 2D, 1D and strongly correlated spin gases.
#LTQI #QuPa
#LTQI #QuPa
