scholarly journals Visualizing designer quantum states in stable macrocycle quantum corrals

2021 ◽  
Author(s):  
Jiong Lu ◽  
Xinnan Peng ◽  
Harshitra Mahalingam ◽  
Shaoqiang Dong ◽  
Pingo Mutombo ◽  
...  
Keyword(s):  
Atomic Orbital ◽  
Molecular Assembly ◽  
Quantum States ◽  
Scattered Electron ◽  
Resonance States ◽  
New Era ◽  
Atomic Precision ◽  
Covalently Linked ◽  
On Chip ◽  
Quantum Technology

Abstract Creating atomically-precise quantum architectures with high digital fidelity and desired quantum states is an important goal in a new era of quantum technology. The strategy of creating these quantum nanostructures mainly relies on atom-by-atom, molecule-by-molecule manipulation or molecular assembly through non-covalent interactions, which thus lack sufficient chemical robustness required for on-chip quantum device operation at elevated temperature. Here, we report a bottom-up synthesis of covalently linked organic quantum corrals (OQCs) with atomic precision to induce the formation of topology-controlled quantum resonance states, arising from a collective interference of scattered electron waves inside the quantum nanocavities. Individual OQCs host a series of atomic orbital-like resonance states whose orbital hybridization into artificial homo-diatomic and hetero-diatomic molecular-like resonance states can be constructed in Cassini oval-shaped OQCs with desired topologies corroborated by joint and analytic calculations. Our studies open up a new avenue to fabricate covalently linked large-sized OQCs with atomic precision to engineer desired quantum states with high chemical robustness and digital fidelity for new-generation quantum technology.

scholarly journals Visualizing designer quantum states in stable macrocycle quantum corrals

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xinnan Peng ◽  
Harshitra Mahalingam ◽  
Shaoqiang Dong ◽  
Pingo Mutombo ◽  
Jie Su ◽  
...  
Keyword(s):  
Atomic Orbital ◽  
Molecular Assembly ◽  
Quantum States ◽  
Scattered Electron ◽  
Resonance States ◽  
Practical Applications ◽  
Atomic Precision ◽  
Covalently Linked ◽  
On Chip ◽  
Quantum Technology

AbstractCreating atomically precise quantum architectures with high digital fidelity and desired quantum states is an important goal in a new era of quantum technology. The strategy of creating these quantum nanostructures mainly relies on atom-by-atom, molecule-by-molecule manipulation or molecular assembly through non-covalent interactions, which thus lack sufficient chemical robustness required for on-chip quantum device operation at elevated temperature. Here, we report a bottom-up synthesis of covalently linked organic quantum corrals (OQCs) with atomic precision to induce the formation of topology-controlled quantum resonance states, arising from a collective interference of scattered electron waves inside the quantum nanocavities. Individual OQCs host a series of atomic orbital-like resonance states whose orbital hybridization into artificial homo-diatomic and hetero-diatomic molecular-like resonance states can be constructed in Cassini oval-shaped OQCs with desired topologies corroborated by joint ab initio and analytic calculations. Our studies open up a new avenue to fabricate covalently linked large-sized OQCs with atomic precision to engineer desired quantum states with high chemical robustness and digital fidelity for future practical applications.

scholarly journals QuCumber: wavefunction reconstruction with neural networks

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Matthew J. S. Beach ◽  
Isaac De Vlugt ◽  
Anna Golubeva ◽  
Patrick Huembeli ◽  
Bohdan Kulchytskyy ◽  
...  
Keyword(s):  
Open Source Software ◽  
Software Package ◽  
Original Data ◽  
Quantum States ◽  
Computational Techniques ◽  
Boltzmann Machine ◽  
New Era ◽  
Open Source Software Package ◽  
Quantum Technology ◽  
Projective Measurements

As we enter a new era of quantum technology, it is increasingly important to develop methods to aid in the accurate preparation of quantum states for a variety of materials, matter, and devices. Computational techniques can be used to reconstruct a state from data, however the growing number of qubits demands ongoing algorithmic advances in order to keep pace with experiments. In this paper, we present an open-source software package called QuCumber that uses machine learning to reconstruct a quantum state consistent with a set of projective measurements. QuCumber uses a restricted Boltzmann machine to efficiently represent the quantum wavefunction for a large number of qubits. New measurements can be generated from the machine to obtain physical observables not easily accessible from the original data.

scholarly journals The Rise of the OM-LoC: Opto-Microfluidic Enabled Lab-on-Chip

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1467
Author(s):  
Harry Dawson ◽  
Jinane Elias ◽  
Pascal Etienne ◽  
Sylvie Calas-Etienne
Keyword(s):  
Low Cost ◽  
Optical Components ◽  
New Era ◽  
Lab On Chip ◽  
Highly Sensitive ◽  
Multiple Challenges ◽  
On Chip ◽  
Optical Circuits ◽  
Made In

The integration of optical circuits with microfluidic lab-on-chip (LoC) devices has resulted in a new era of potential in terms of both sample manipulation and detection at the micro-scale. On-chip optical components increase both control and analytical capabilities while reducing reliance on expensive laboratory photonic equipment that has limited microfluidic development. Notably, in-situ LoC devices for bio-chemical applications such as diagnostics and environmental monitoring could provide great value as low-cost, portable and highly sensitive systems. Multiple challenges remain however due to the complexity involved with combining photonics with micro-fabricated systems. Here, we aim to highlight the progress that optical on-chip systems have made in recent years regarding the main LoC applications: (1) sample manipulation and (2) detection. At the same time, we aim to address the constraints that limit industrial scaling of this technology. Through evaluating various fabrication methods, material choices and novel approaches of optic and fluidic integration, we aim to illustrate how optic-enabled LoC approaches are providing new possibilities for both sample analysis and manipulation.

An On-Chip Homodyne Detector for Measuring Quantum States

2018 ◽  
Author(s):  
Giacomo Ferranti ◽  
Francesco Raffaelli ◽  
Dylan H. Mahler ◽  
Philip Sibson ◽  
Jake E. Kennard ◽  
...  
Keyword(s):  
Quantum States ◽  
Homodyne Detector ◽  
On Chip

Scalable on-chip generation and coherent control of complex optical quantum states

2018 ◽  
Author(s):  
Piotr Roztocki ◽  
Michael Kues ◽  
Christian Reimer ◽  
Luis Romero Cortés ◽  
Stefania Sciara ◽  
...  
Keyword(s):  
Coherent Control ◽  
Quantum States ◽  
On Chip

Toward all-optical control of rare-earth ions for on-chip quantum technology

2017 ◽  
Author(s):  
John G. Bartholomew ◽  
Raymond Lopez-Rios ◽  
Jonathan M. Kindem ◽  
Jake Rochman ◽  
Tian Zhong ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Ions ◽  
Optical Control ◽  
All Optical ◽  
On Chip ◽  
Quantum Technology

scholarly journals Automated Hierarchical Stock Inventory Management with IoT and cloud based solutions. A Risc V story. A late breaking paper.

2020 ◽  
Author(s):  
Anil Kumar Bheemaiah
Keyword(s):  
Inventory Management ◽  
Predictive Analytics ◽  
Experimental Methodology ◽  
Stock Management ◽  
Power Sources ◽  
New Era ◽  
Academic Pressure ◽  
Shopping Experience ◽  
Research Problems ◽  
On Chip

Abstract:We are entering a new era in automation, where AWS or Azure cloud based IoT solutions are being used to automate stock inventory management and retail. Inspired by Amazon’s Go store franchise, the author has developed the Go-Pi box as a primary retail cache with a feed from a secondary warehouse cache with innovative IoT based inventory stock keeping. With the increased societal and academic pressure for an experimental approach, the author proposes an experimental methodology of data collection, using a network of pi-boxes on a pilot basis, using Amazon Go technology, in collaboration with Amazon, for a viability check, using predictive analytics, of the evolution of retail e-commerce to a multi tier cache based Pi-Box called “Just Walk Out”.(“Just Walk Out” n.d.)The pertinent research problems are: 1. Development of a flexible plastic system on chip, with passive power sources, to evolve an RFID based solution to an IoT and cloud/SaaS based solution using the things network with NFC/Lora/SigFox for connectivity. 2. Evolution of the humble vending machine to a smaller Amazon Go retail experience. While Amazon franchises its deep learning based shopping experience, I would like to use that technology with the Go-Pi, a democratized vending machine, that logs peoples donations and gives credit for that while selling Amazon Go products as well as offering the donations for free to people with the app. While we develop better automated stock management for both the warehouse feed and the Pi box. Keywords: SAP, AWS, Leonardo IoT, EBF, GreenGrass, FreeRTOS, Pi-Box, Just Go Out, Amazon Go, conversational CRM with Amazon Lex.

scholarly journals Quantum communication with coherent states of light

2017 ◽  
Vol 375 (2099) ◽  
pp. 20160235 ◽  
Author(s):  
Imran Khan ◽  
Dominique Elser ◽  
Thomas Dirmeier ◽  
Christoph Marquardt ◽  
Gerd Leuchs
Keyword(s):  
Coherent States ◽  
Secure Communication ◽  
Communication Systems ◽  
Quantum Communication ◽  
Continuous Variable ◽  
Quantum States ◽  
Complexity Of Algorithms ◽  
Laser Systems ◽  
Quantum Technology ◽  
Photon States

Quantum communication offers long-term security especially, but not only, relevant to government and industrial users. It is worth noting that, for the first time in the history of cryptographic encoding, we are currently in the situation that secure communication can be based on the fundamental laws of physics (information theoretical security) rather than on algorithmic security relying on the complexity of algorithms, which is periodically endangered as standard computer technology advances. On a fundamental level, the security of quantum key distribution (QKD) relies on the non-orthogonality of the quantum states used. So even coherent states are well suited for this task, the quantum states that largely describe the light generated by laser systems. Depending on whether one uses detectors resolving single or multiple photon states or detectors measuring the field quadratures, one speaks of, respectively, a discrete- or a continuous-variable description. Continuous-variable QKD with coherent states uses a technology that is very similar to the one employed in classical coherent communication systems, the backbone of today’s Internet connections. Here, we review recent developments in this field in two connected regimes: (i) improving QKD equipment by implementing front-end telecom devices and (ii) research into satellite QKD for bridging long distances by building upon existing optical satellite links. This article is part of the themed issue ‘Quantum technology for the 21st century’.

An On-chip Homodyne Detector for Measuring Quantum States

2017 ◽  
Author(s):  
Dylan H. Mahler ◽  
Francesco Raffaelli ◽  
Giacomo Ferranti ◽  
Philip Sibson ◽  
Jake E. Kennard ◽  
...  
Keyword(s):  
Quantum States ◽  
Homodyne Detector ◽  
On Chip
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