Simplified quantum process tomography
Webb7 okt. 2024 · Quantum process tomography is a critical capability for building quantum computers, enabling quantum networks, and understanding quantum sensors. Like quantum state tomography, the process tomography of an arbitrary quantum channel requires a number of measurements that scale exponentially in the number of quantum … Webb22 dec. 2024 · Not all quantum operations are unitary. A more general type of quantum operation is the completely positive trace-preserving (CPTP) linear map which is the main subject of chapter $8$ of Nielsen & Chuang. The $\chi$ matrix is one of several concrete descriptions of a CPTP map and is the output of the standard quantum process …
Simplified quantum process tomography
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WebbFidelity of a Rydberg-blockade quantum gate from simulated quantum process tomography X. L. Zhang, A. T. Gill, L. Isenhower, T. G. Walker, and M. Saffman Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, Wisconsin 53706, USA (Received 30 January 2012; published 10 April 2012) Webb23 jan. 2009 · We fully characterized the system by performing tomography on the teleported states, enabling complete process tomography of the teleportation protocol. The measured average teleportation fidelity of 90% ± 2% [90(2)%] over a set of mutually unbiased basis states, which is well above the 2/3 fidelity threshold that could be …
Webb14 jan. 2013 · Abstract. The essential tool to characterize dynamics of an open quantum system is quantum process tomography (QPT). Although standard QPT methods are … WebbQuantum tomography or quantum state tomography is the process by which a quantum state is reconstructed using measurements on an ensemble of identical quantum …
WebbWe propose and evaluate experimentally an approach to quantum process tomography that completely removes the scaling problem plaguing the standard approach. The key to this simplification is the incorporation of prior knowledge of the class of physical interactions involved in generating the dynamics, which reduces the problem to one of … Webbunvec(vec(A)) = A. u n v e c ( v e c ( A)) = A. Of course unvec () generally depends on the dimensions of A A , which are not recoverable from vec (A). We often focus on square A, but for generality, we require the dimensions for A A, defaulting to the square root of the dimension of vec (A).
Webb12 jan. 2024 · We present a framework for quantum process tomography of two-ion interactions that leverages modulations of the trapping potential and composite pulses …
WebbWe propose and evaluate experimentally an approach to quantum process tomography that completely removes the scaling problem plaguing the standard approach. The key … raytheon adasWebb27 maj 2011 · The operational quality of the QEC protocol can be assessed by exposing it to correctable errors, that is, single-qubit phase-flip errors. Ideally, the encoded qubit experiences an identity operation. Experimentally, the implemented process is characterized with quantum process tomography ( 22, 23 ), which yields a process … raytheon adpWebbAt the age of 16, Markus Beckers left the high school and decided to take an apprenticeship as a mechanical engineering technician specialising in generative mechanics. From then on, activities such as turning, milling and welding were part of his everyday life. To this day, he tries to carry out all the manual work on house, bike, etc. … raytheon address andover maWebb12 aug. 2024 · Most previous results on compressed process reconstruction reduce the problem to quantum state tomography on the channel's Choi matrix. While this ansatz yields recovery guarantees from an essentially minimal number of measurements, physical implementations of such schemes would typically involve ancillary systems. raytheon address in el segundo casimply healthcare provider listWebb1 nov. 2009 · The new method encompasses the most common quantum process tomography schemes. It is based on the variational quantum tomography method (VQT) … simply healthcare provider log inWebbQuantum tomography of states and processes is an invaluable tool used in many such experiments, because it enables a complete characterization of the state of a quantum system or process (see, e.g., [2–16]). Unfortunately, tomography is very resource intensive, and scales exponentially with the size of the system. For raytheon address mckinney tx