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Coherent Optical Parallel Computing

Periodic Reporting for period 1 - COPAC (Coherent Optical Parallel Computing)

Reporting period: 2017-11-01 to 2018-10-31

COPAC aims at foundational experimental, theoretical and algorithmic innovations to demonstrate a new technological paradigm for ultrafast parallel multi-valued information processing at room temperature. COPAC opens a transformative novel area in computing both because of the technology, coherent information transfer by ultrafast laser addressing of engineered quantum dots, QD, arrays and because of the specialized parallel processing of large amounts of information. A ground-breaking nonlinear coherent spectroscopy combining optical addressing and spatially macroscopically resolved optical readout to achieve unprecedented levels of speed, density and complexity will be developed. Two key high-risk / high-reward pioneering elements are the quantum engineered coherent concatenation of units and the multidirectional optical detection. Experimental demonstrations on tailored multilayer QD arrays of increasing complexity, integration into a device and novel hardware and matched compilers will be delivered. Preliminary experimental demonstrations of the response of solutions and of QD films are available as is the validation of logic operation in parallel.
COPAC has four overall objectives directed towards enabling the design and the realization of novel high-density and ultrafast parallel logic device at room temperature.
Objective 1. To execute dense multivalued parallel logic on a single optically active node in solution
Objective 2: To develop the capability to implement dense multivalued parallel logic on condensed phase arrays.
Objective 3. Increasing the number of output directions.
Objective 4. To engineer and validate an integrated module.
The results achieved during the first year by the COPAC beneficiaries were made possible by a strong collaborative effort of the partners, PI and researchers working on the project which ensured the fulfillment of the objectives, milestones and deliverables of PR1.
At the end of PR1, two joint peer reviewed publications on the results of COPAC for PR1 have appeared. The COPAC partners presented the results of the project at 10 scientific meetings and at 4 reach out events.

The COPAC approach of computing by observables was shown to offer a superdense coding of parallel and multivalued logic which could exceed that possible with the same system configured as concatenated qubits. The design of a first compiler performing transforms of logic function on a COPAC device was carried out. Multiscale modeling tools for dyes and QD arrays were set up for computing the quantal dynamics responses of QD and dyes to sequences of fs pulses. Several synthesis protocols for controlling size and coupling between CdSe QD and core shell CdSe@ZnS QD were set up. Fast energy transfer was demonstrated in CdSe QD layered structures and related to a coherent coupling mechanism taking place in CdSe QD dimer with QD size engineered to maximize the coupling. Non linear 2D electronic spectroscopy measurements were performed on the synthesized core shell QD’s allowing deciphering hot- and multi-exciton dynamics as well as on dyes in solution, demonstrating a rich intraunit coherent dynamics. Preparatory activities for inter unit dynamics in dimer solutions and in the solid-state form were performed. The design of the prototype design was achieved which opens the way to a technology implementation.
Progress beyond state of the art
COPAC provides progress beyond state of the art at several levels. These will enable it to present to European industries an optical-parallel-computing-module that operates under ambient conditions and that is ready for manufacturing and implementation towards massive data handling.

Expected results
The continued advance of the information society requires transformative new ways for the faster processing of the rapidly increasing volumes of information that are being generated by an ever-growing range of applications. COPAC will demonstrate a prototype on which the industrial development of new ultrafast devices and processing systems can be based. COPAC will combine our preliminary multidisciplinary experimental and theoretical breakthroughs advances with the expertise of technology partners to bring our work to the programmable device level. COPAC will build on the new capabilities provided by the hardware that it will develop to initiate new algorithms and new kinds of mathematical and computational approaches that are essential operations in large volume data analysis, data compaction and logic synthesis.
The long term vision of COPAC is the application of atomic and molecular state resolved controlled quantum dynamic processes towards information processing at room temperature. Within this our targeted breakthrough is a novel prototype device for parallel logic engineered to industry standards and with suitable compilers.

Potential impacts
COPAC seeks to achieve a radically new line of technology for implementing massively parallel computing at the hardware level by coherent non-linear optical addressing and reading at room temperarture. COPAC will deliver a proof-of-concept prototype optical device that exploits the quantum features of the hardware and has potentially the same capabilities as quantum computing yet performs classical logic and it performs at ambient conditions. The key advantages of the new technology are that, if successful, the COPAC device will operate at room temperature, using a bottom-up self assembly approach to build the device, process large amounts of information per cycle in parallel at a high speed and enables a macroscopic evaluation and reading in parallel of many (multivalued) observables. The new technology relies on transformational impact and technological breakthroughs in computer architecture, with the developments of compilers and software adapted to processing information by non-linear coherent spectroscopy and exploiting new science that enables parallelism at the hardware level. Developing and mastering new information and communication technologies (ICT) is of strategic importance for the Single Digital Market in Europe. COPAC answers the pressing need of the society for fast and efficient ICT in Europe in the communication, automotive, environmental control, healthcare, security, artificial intelligence and entertainment industries, which call for disruptive and versatile devices that can operate at ambient conditions.

Impact during the first period.
The concept and technology developed by COPAC are expected to have an impact on the community working in the domain of the FET EC Flagship quantum technologies. All COPAC participants are involved in various ways in this community in the field of non conventional quantum computing, quantum simulations and quantum devices.
During the first period, COPAC made several scientific advances that can have an impact in quantum molecular and nano information processing, non linear spectroscopy of supramolecular complexes and nanotechnologies and devices.