scholarly journals Thermally condensing photons into a coherently split state of light

Science ◽  
2019 ◽  
Vol 366 (6467) ◽  
pp. 894-897 ◽  
Author(s):  
Christian Kurtscheid ◽  
David Dung ◽  
Erik Busley ◽  
Frank Vewinger ◽  
Achim Rosch ◽  
...  
Keyword(s):  
Room Temperature ◽  
Information Science ◽  
Beam Splitter ◽  
Optical Manipulation ◽  
Many Body ◽  
Tunnel Coupling ◽  
Wide Range ◽  
Split State ◽  
And Control ◽  
Manipulation And Control

The quantum state of light plays a crucial role in a wide range of fields, from quantum information science to precision measurements. Whereas complex quantum states can be created for electrons in solid-state materials through mere cooling, optical manipulation and control builds on nonthermodynamic methods. Using an optical dye microcavity, we show that photon wave packets can be split through thermalization within a potential with two minima subject to tunnel coupling. At room temperature, photons condense into a quantum-coherent bifurcated ground state. Fringe signals upon recombination show the relative coherence between the two wells, demonstrating a working interferometer with the nonunitary thermodynamic beam splitter. Our energetically driven optical-state preparation method provides a route for exploring correlated and entangled optical many-body states.

scholarly journals Chasing Aqueous Biphasic Systems from Simple Salts by Exploring the LiTFSI

2018 ◽  
Author(s):  
Nicolas Dubouis ◽  
Chanbum Park ◽  
Michael Deschamps ◽  
Soufiane Abdelghani-Idrissi ◽  
Matej Kanduč ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Fundamental Question ◽  
Aqueous Biphasic Systems ◽  
Wide Range ◽  
Battery Systems ◽  
Aqueous Biphasic ◽  
Biphasic Systems ◽  
And Control ◽  
Liquid Liquid Phase Separation

<i>Aqueous Biphasic Systems (ABS), in which two aqueous phases with different compositions coexist as separate liquids, have first been reported over a century ago with polymer solutions. Recent observations of ABS forming from concentrated mixtures of inorganic salts and ionic liquids raise the fundamental question of how "different" the components of such mixtures should be for a liquid-liquid phase separation to occur. Here we show that even two monovalent salts sharing a common cation (lithium) but with different anions, namely LiCl and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), may result in the formation of ABSs over a wide range of compositions at room temperature. Using a combination of experimental techniques and molecular simulations, we analyze the coexistence diagram and the mechanism driving the phase separation, arising from the different anion sizes. The understanding and control of ABS may provide new avenues for aqueous-based battery systems. </i>

scholarly journals Chasing Aqueous Biphasic Systems from simple salts by exploring the LiTFSI/LiCl/H2O phase diagram

2019 ◽  
Author(s):  
Nicolas Dubouis ◽  
Chanbum Park ◽  
Michael Deschamps ◽  
Soufiane Abdelghani-Idrissi ◽  
Matej Kanduč ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Fundamental Question ◽  
Aqueous Biphasic Systems ◽  
Wide Range ◽  
Battery Systems ◽  
Aqueous Biphasic ◽  
Biphasic Systems ◽  
And Control ◽  
Liquid Liquid Phase Separation

<i>Aqueous Biphasic Systems (ABS), in which two aqueous phases with different compositions coexist as separate liquids, have first been reported over a century ago with polymer solutions. Recent observations of ABS forming from concentrated mixtures of inorganic salts and ionic liquids raise the fundamental question of how "different" the components of such mixtures should be for a liquid-liquid phase separation to occur. Here we show that even two monovalent salts sharing a common cation (lithium) but with different anions, namely LiCl and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), may result in the formation of ABSs over a wide range of compositions at room temperature. Using a combination of experimental techniques and molecular simulations, we analyze the coexistence diagram and the mechanism driving the phase separation, arising from the different anion sizes. The understanding and control of ABS may provide new avenues for aqueous-based battery systems. </i>

scholarly journals Chasing Aqueous Biphasic Systems from simple salts by exploring the LiTFSI/LiCl/H2O phase diagram

2019 ◽  
Author(s):  
Nicolas Dubouis ◽  
Chanbum Park ◽  
Michael Deschamps ◽  
Soufiane Abdelghani-Idrissi ◽  
Matej Kanduč ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Fundamental Question ◽  
Aqueous Biphasic Systems ◽  
Wide Range ◽  
Battery Systems ◽  
Aqueous Biphasic ◽  
Biphasic Systems ◽  
And Control ◽  
Liquid Liquid Phase Separation

<i>Aqueous Biphasic Systems (ABS), in which two aqueous phases with different compositions coexist as separate liquids, have first been reported over a century ago with polymer solutions. Recent observations of ABS forming from concentrated mixtures of inorganic salts and ionic liquids raise the fundamental question of how "different" the components of such mixtures should be for a liquid-liquid phase separation to occur. Here we show that even two monovalent salts sharing a common cation (lithium) but with different anions, namely LiCl and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), may result in the formation of ABSs over a wide range of compositions at room temperature. Using a combination of experimental techniques and molecular simulations, we analyze the coexistence diagram and the mechanism driving the phase separation, arising from the different anion sizes. The understanding and control of ABS may provide new avenues for aqueous-based battery systems. </i>

scholarly journals Chasing Aqueous Biphasic Systems from simple salts by exploring the LiTFSI/LiCl/H2O phase diagram

2018 ◽  
Author(s):  
Nicolas Dubouis ◽  
Chanbum Park ◽  
Michael Deschamps ◽  
Soufiane Abdelghani-Idrissi ◽  
Matej Kanduč ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Fundamental Question ◽  
Aqueous Biphasic Systems ◽  
Wide Range ◽  
Battery Systems ◽  
Aqueous Biphasic ◽  
Biphasic Systems ◽  
And Control ◽  
Liquid Liquid Phase Separation

<i>Aqueous Biphasic Systems (ABS), in which two aqueous phases with different compositions coexist as separate liquids, have first been reported over a century ago with polymer solutions. Recent observations of ABS forming from concentrated mixtures of inorganic salts and ionic liquids raise the fundamental question of how "different" the components of such mixtures should be for a liquid-liquid phase separation to occur. Here we show that even two monovalent salts sharing a common cation (lithium) but with different anions, namely LiCl and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), may result in the formation of ABSs over a wide range of compositions at room temperature. Using a combination of experimental techniques and molecular simulations, we analyze the coexistence diagram and the mechanism driving the phase separation, arising from the different anion sizes. The understanding and control of ABS may provide new avenues for aqueous-based battery systems. </i>

scholarly journals Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter

2019 ◽  
Vol 5 (7) ◽  
pp. eaav5931 ◽  
Author(s):  
Kyoung-Duck Park ◽  
Molly A. May ◽  
Haixu Leng ◽  
Jiarong Wang ◽  
Jaron A. Kropp ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Room Temperature ◽  
Information Science ◽  
Near Field ◽  
Plasmonic Nanostructures ◽  
Single Quantum ◽  
Single Emitter ◽  
Control Light ◽  
And Control ◽  
Mode Volume

Optical cavities can enhance and control light-matter interactions. This level of control has recently been extended to the nanoscale with single emitter strong coupling even at room temperature using plasmonic nanostructures. However, emitters in static geometries, limit the ability to tune the coupling strength or to couple different emitters to the same cavity. Here, we present tip-enhanced strong coupling (TESC) with a nanocavity formed between a scanning plasmonic antenna tip and the substrate. By reversibly and dynamically addressing single quantum dots, we observe mode splitting up to 160 meV and anticrossing over a detuning range of ~100 meV, and with subnanometer precision over the deep subdiffraction-limited mode volume. Thus, TESC enables previously inaccessible control over emitter-nanocavity coupling and mode volume based on near-field microscopy. This opens pathways to induce, probe, and control single-emitter plasmon hybrid quantum states for applications from optoelectronics to quantum information science at room temperature.

scholarly journals Chasing Aqueous Biphasic Systems from simple salts by exploring the LiTFSI/LiCl/H2O phase diagram

2019 ◽  
Author(s):  
Nicolas Dubouis ◽  
Chanbum Park ◽  
Michael Deschamps ◽  
Soufiane Abdelghani-Idrissi ◽  
Matej Kanduč ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Fundamental Question ◽  
Aqueous Biphasic Systems ◽  
Wide Range ◽  
Battery Systems ◽  
Aqueous Biphasic ◽  
Biphasic Systems ◽  
And Control ◽  
Liquid Liquid Phase Separation

<i>Aqueous Biphasic Systems (ABS), in which two aqueous phases with different compositions coexist as separate liquids, have first been reported over a century ago with polymer solutions. Recent observations of ABS forming from concentrated mixtures of inorganic salts and ionic liquids raise the fundamental question of how "different" the components of such mixtures should be for a liquid-liquid phase separation to occur. Here we show that even two monovalent salts sharing a common cation (lithium) but with different anions, namely LiCl and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), may result in the formation of ABSs over a wide range of compositions at room temperature. Using a combination of experimental techniques and molecular simulations, we analyze the coexistence diagram and the mechanism driving the phase separation, arising from the different anion sizes. The understanding and control of ABS may provide new avenues for aqueous-based battery systems. </i>

Mechanical Properties and Dislocation Structure of Single Crystal Cdte Deformed in Compression at 300°C

1976 ◽  
Vol 34 ◽  
pp. 592-593
Author(s):  
Ernest L. Hall ◽  
J. B. Vander Sande
Keyword(s):  
Mechanical Properties ◽  
Single Crystal ◽  
Dislocation Structure ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Strain Curve ◽  
Optical Devices ◽  
Semiconductor Compound ◽  
Wide Range ◽  
Sample Orientation

The present paper describes research on the mechanical properties and related dislocation structure of CdTe, a II-VI semiconductor compound with a wide range of uses in electrical and optical devices. At room temperature CdTe exhibits little plasticity and at the same time relatively low strength and hardness. The mechanical behavior of CdTe was examined at elevated temperatures with the goal of understanding plastic flow in this material and eventually improving the room temperature properties. Several samples of single crystal CdTe of identical size and crystallographic orientation were deformed in compression at 300°C to various levels of total strain. A resolved shear stress vs. compressive glide strain curve (Figure la) was derived from the results of the tests and the knowledge of the sample orientation.

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