The Design And Implementation Of Photonic Bosonic-Fermionic Quantum Simulation System

Quantum computing with the super computing power that traditional computer can not match,is one of the most important post-Moore technology.As integrated circuit technology continues to evolve according to Moore's Law,the number of integrated tran-sistors on a single chip is increasing and the size of semiconductor devices on the chip is becoming smaller and smaller.When the feature size of the device is close to the scale of a single atom,the quantum effect will be unavoidable,affecting functioning of the tran-sistor.To solve the problem,exploring the new efficient technology of post-Moore era is the inevitable requirement of the development of computer science.Quantum computing is a new computing technique that utilizes quantum effects,and it is completely different from traditional computing methods from computing models to implementation methods.Quantum algorithms have shown that quantum computing has the inherent computational advantage over classical computing in computational complexity when solving problems in many areas.As a result,quantum computing has become an attracting frontier in the world.In the past thirty years,quantum computing has made great progress in all aspects,including quantum algorithm and physical realization,but most of the work still focuses on physical system and lacks the research and exploration related to the whole computing system.In the physical realization of quantum computation,many kinds of physical sys-tems have been proposed,such as photon,atom,ion,quantum dot,superconductor,etc.The 2012 Nobel Prize in Physics for single quantum system measurement and control research is an important milestone achievement in quantum system development;many small-scale quantum-physics systems that demonstrate and validate the fundamentals of quantum algorithms also emerge one after another.However,most of these studies are still at the physical system level,lack of program control and other Computing System related ideas and concepts in traditional computer fields;some even stay in the manual manipulation level.For the problem above,this paper focuses on the programmability of quantum com-puting systems,using the methods and techniques in computer science to achieve pro-grammable quantum computing system.In particular,we design and implement a pro-grammable Bosonic-Fermionic quantum simulation system based on entangled photons.The key contributions include:·The theoretical deduction of using entangled photons to simulate the identical boson-s and the identical fermions.The evolution of the boson or fermion quantum system is simulated by controlling the entangled state of the entangled photons.In addition,the evolution of the boson and the fermion on the typical quantum evolution net-work is quantitatively analyzed.It provides the theoretical guidance for the design and implementation of the bosonic-fermionic quantum simulation system.·The design and implementation of a programmable Bosonic-Fermionic quantum simulation system.The system can run simulation program with quantum subrou-tine.Similar programmable mechanism has only appeared in very few studies,such as D-Wave,which provides an important experimental platform for the research of computational mechanism of quantum computing system.·The evaluation of the implemented programmable Bosonic-Fermionic quantum sim-ulation system.The polarization entangled two-photon source in the system was measured,and the polarization contrast ratio was 98.28%(|?~+?)and 99.65%(|?~-?)respectively in the horizontal and vertical polarization measurement base;while98.55%(|?~+?)and 97.48%(|?~-?)in the diagonal angle of polarization measure-ment base.The CHSH inequality of 2.72(15-?violation in 0.5 second)and 2.41(94-?violation in 50 seconds)was obtained.The fidelity of the entanglemen-t source amounted to 94%(|?~+?)and 92%(|?~-?)respectively.For the overall evaluation of the quantum simulation system,the similarity of 95.2%for bosonic simulation and 97.1%for fermionic simulation was obtained.The results show that the proposed system can simulate the quantum evolution of bosons and fermions with high accuracy under program control.