Abstract
Inspired by biological molecular machines we explore the idea of an active quantum robot whose purpose is delaying decoherence. A conceptual model capable of partially protecting arbitrary logical qubit states against single physical qubit errors is presented. Implementation of an instance of that model - the entanglement qubot - is proposed using laser-dressed Rydberg atoms. Dynamics of the system is studied using stochastic wavefunction methods.
Highlights
The living cell can be seen as a Brownian computer [1]
A detailed unified understanding of biological molecular machines according to the tradition of theoretical physics is yet to be achieved [11] but there is little doubt that experimental [12] and computational methods [13] in physics play a key role in that endeavor
We introduce the conceptual model of a quantum robot capable of protecting an arbitrary logical qubit state against errors
Summary
The living cell can be seen as a Brownian computer [1]. At its core, machines of molecular dimensions store, correct, and process information in the presence of noise, with the goal of keeping the state of the living creature away from thermodynamical equilibrium. The machinery of life [2] is responsible for gene expression, matter transport across the cell, and energy harvesting, among a vast number of other tasks [3] An example of such molecular devices is RNA polymerase (RNAP): an enzyme with approximately 40 000 atoms, roughly 10 nm of linear size, capable of synthesizing a strand of Ribonucleic acid (RNA) from a DNA template in the presence of Brownian noise, at error rates as low as 10−7 [4]. That effective spin interactions of the so-called XYZ form with more general radial dependencies can be engineered within a number of different systems, including trapped ions [40,41], atoms in dressed Rydberg states [42,43], and microwaveexcited polar molecules in optical lattices [44,45].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
