Page 33 - Quantum Optics News Today

 E-Mail IMAGE: Clocks pervade every aspect of life, from the atomic clocks that underlie satellite navigation to the cellular clocks inside our bodies. view more  Credit: Lancaster University A new experiment shows that the more energy consumed by a clock, the more accurate its timekeeping. Clocks pervade every aspect of life, from the atomic clocks that underlie satellite navigation to the cellular clocks inside our bodies. All of them consume energy and release heat. A kitchen clock...

Magazine’s Abstractions blog. The thorny thought experiment has been turned into a real experiment — one that physicists use to probe the physics of information.Illustration by Samuel Velasco / Quanta Magazine The universe bets on disorder. Imagine, for example, dropping a thimbleful of red dye into a swimming pool. All of those dye molecules are going to slowly spread throughout the water. Physicists quantify this tendency to spread by counting the number of possible ways the dye molecule...

Photograph by Kristina DeMichele/Harvard Magazine.  Harvard will launch a Ph.D. program in quantum science and engineering, one of the first in the world, the University announced today. The program has been designed to train the next generation of leaders and innovators in a domain of physics already having transformative effects on electrical engineering and computer science, biology and chemistry—and poised to transform other fields, too, as researchers demonstrate increasing capability t...

Making Quantum Dynamics Exact April 19, 2021• Physics 14, 60 Three new studies provide analytical descriptions and exact solutions for various aspects of thermodynamics in quantum many-body systems. Figure 1: A graphical representation of a quantum circuit known as Rule 54. The circuit was used by Katja Klobas and colleagues to provide an exact description of the thermalization process of a quantum many-body system [2].× The concept of thermodynamics is nearing its 175th birthday. Des...

 E-Mail IMAGE: A light field with time-dependent frequencies - propagating in a waveguide. Due to self-compression the pulse addresses individual quantum emitters. view more  Credit: University of Innsbruck In order to exploit the properties of quantum physics technologically, quantum objects and their interaction must be precisely controlled. In many cases, this is done using light. Researchers at the University of Innsbruck and the Institute of Quantum Optics and Quantum Information...

Date Time Remote control for quantum emitters Quantum technologies are enabled by precise control of the state and interactions of individual quantum objects. Innsbruck physicists have now proposed a way to remotely control the state of individual quantum emitters. The underlying idea, developed by a research group led by Oriol Romero-Isart, is based on chirped light pulses. In order to exploit the properties of quantum physics technologically, quantum objects and their interaction must be prec...

 E-Mail IMAGE: Michael Grätzel, winner of the BBVA Foundation Frontiers of Knowledge Award in Basic Sciences. view more  Credit: BBVA FOUNDATION The BBVA Foundation Frontiers of Knowledge Award in the Basic Sciences category has gone in this thirteenth edition to Paul Alivisatos (University of California, Berkeley, United States) and Michael Grätzel (Ecole Polytechnique Fédérale de Lausanne, Switzerland) for their fundamental contributions to the development of new nanomaterials a...

 E-Mail IMAGE: This picture shows the two qubit modules (red atom between two blue mirrors) that have been interconnected to implement a basic quantum computation (depicted as light blue symbol) over a... view more  Credit: Stephan Welte, Severin Daiss (MPQ) Todays quantum computers contain up to several dozen memory and processing units, the so-called qubits. Severin Daiss, Stefan Langenfeld, and colleagues from the Max Planck Institute of Quantum Optics in Garching have successfully...

Today’s quantum computers contain up to several dozen memory and processing units, the so-called qubits. Severin Daiss, Stefan Langenfeld, and...

2 February 2021, 11:00 - 12:00 EasternTime Menlo Systems’ ultra-low noise (ULN) frequency comb technology, combined with advanced CW laser sources, ensures transferring the spectral purity of a superior optical reference to all CW lasers locked to the comb. This feature is exploited in clock comparisons or quantum experiments, where a long coherence time of the laser sources is mandatory. As pioneer and the market leader of optical frequency comb technology, in the secon...