Universal limitations on implementing resourceful unitary evolutions
نویسندگان
چکیده
منابع مشابه
A Universal Dilation of Discrete Markov Evolutions
Given a finite state space E, we build a universal dilation for all possible discrete time Markov chains on E, homogeneous or not: we introduce a second system (an “environment”) and a deterministic invertible time-homogeneous global evolution of the system E with this environment such that any Markov evolution of E can be realized by a proper choice of the initial (random) state of the environ...
متن کاملSuperadiabatic Controlled Evolutions and Universal Quantum Computation
Adiabatic state engineering is a powerful technique in quantum information and quantum control. However, its performance is limited by the adiabatic theorem of quantum mechanics. In this scenario, shortcuts to adiabaticity, such as provided by the superadiabatic theory, constitute a valuable tool to speed up the adiabatic quantum behavior. Here, we propose a superadiabatic route to implement un...
متن کاملThe Resourceful Reader The Resourceful Reader :
for Communication Yearbook 15. The resourceful reader:Interpreting television characters and narratives The television viewer is an active interpreter, not a passive recipient, of programs. Viewers'interpretations of programs mediate television effects. The 'active viewer' is accepted by bothtraditional and critical mass communication scholars, allowing for a possible convergence<lb...
متن کاملImplementing Unitary 2-Designs Using Random Diagonal-unitary Matrices
Unitary 2-designs are random unitary matrices which, in contrast to their Haar-distributed counterparts, have been shown to be efficiently realized by quantum circuits. Most notably, unitary 2-designs are known to achieve decoupling, a fundamental primitive of paramount importance in quantum Shannon theory. Here we prove that unitary 2-designs can be implemented approximately using random diago...
متن کاملRate Limitations of Unitary Event Analysis
Unitary event analysis is a new method for detecting episodes of synchronized neural activity (Riehle, Grün, Diesmann, & Aertsen, 1997). It detects time intervals that contain coincident firing at higher rates than would be expected if the neurons fired as independent inhomogeneous Poisson processes; all coincidences in such intervals are called unitary events (UEs). Changes in the frequency of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2020
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.101.022315