Time entanglement between a photon and a spin wave in a. Storage of hyperentanglement in a solidstate quantum memory alexey tiranov, jonathan lavoie, alban ferrier, philippe goldner, varun b. The electron spin state can be stored in the nuclear spin on a timescale that is long compared with the electron decoherence time and then coherently transferred back to the electron spin, thus demonstrating the 31p nuclear spin as a solid state quantum memory. Photonecho quantum memory in solid state systems tittel. Chinese researchers have developed a highfidelity integrated solid state quantum memory, making important progress in the field of quantum storage and laying a solid foundation for developing a. Storage of hyperentanglement in a solid state quantum memory alexey tiranov,1,jonathan lavoie,1 alban ferrier,2,3 philippe goldner,3 varun b. Eisaman a, sergey polyakov a,b, michael hohensee c,jingyunfana,b, philip hemmer d, and alan migdall a,b a optical technology division, national institute of standards and technology, 100 bureau. Nowhere is this more crucial than in quantum computation, where great effort must be taken to protect the integrity of a fragile quantum bit. The ability to detect single photons with a high efficiency is a crucial requirement for various quantum information applications. Y 2 sio 5, to generate single photons and implement the quantum memory protocol of duan et al.
Our spin qubit is composed of a single electron in a charged quantum. For these applications, high performance will be required in terms of 3 parameters. P system has demonstrated that its nuclear spins can yield exceedingly long spin coherence times by. A tenqubit solid state spin register with remarkable quantum memory. Solidstate quantum memory using the 31p nuclear spin article pdf available in nature 4557216.
Dof multiplexed solid state quantum memory, and demonstrated photon pulse operation functions with time and frequency dofs. Storage of hyperentanglement in a solidstate quantum memory. Here we demonstrate quantum teleportation of the polarization state of a telecomwavelength photon onto the state of a solid state quantum memory. The overall storereadout fidelity is about 90 per cent, with the loss attributed to imperfect. A tenqubit solid state spin register with remarkable quantum memory 30 september 2019, by ingrid fadelli a schematic sketch of the 10qubit register. Supplementary information for quantum teleportation from a telecomwavelength photon to a solidstate quantum memory f. Our solid state memory is integrable with other chipscale photon source and detector devices for multiplexed quantum and classical information processing at the network nodes. Recent progress in solid state rareearthiondoped systems justifies their status as very strong. Pdf solidstate quantum memory using the 31p nuclear. The scheme is demonstrated using a solidstate quantum memory. A tenqubit solidstate spin register with remarkable. Light for quantum memory is recording the state of light into the atomic cloud. Here we demonstrate the quantum storage and retrieval of photonic hyperentanglement in a solid state quantum memory.
Quantum optics a singlephoton switch and transistor enabled. Solid state physics studies how the largescale properties of solid materials result from their atomicscale properties. Research team from cas key lab of quantum information developed multidegreeoffreedom multiplexed solid state quantum memory and demonstrate photon pulse. Storage of hyperentanglement in a solid state quantum memory. Rare earth iondoped crystals are promising candidates for ensemblebased quantum memory because they are solid state systems with narrow optical transitions. Longlived driven solidstate quantum memory article pdf available in new journal of physics 149 june 2012 with 45 reads how we measure reads. A singlephoton switch and transistor enabled by a solid.
Pdf solidstate quantum memory using the 31p nuclear spin. However, this leads to short lived and mostly predetermined storage. Osa a solid state spinwave quantum memory for photonic. In recent years, solid state spin systems have emerged as promising candidates for quantum information processing. The longest storage time and the highest retrieval e ciency for a solid state memory measured so far, were demonstrated with this system in the classical regime. Solid state quantum information science and technology. It is the largest branch of condensed matter physics. Optimizing the storage and retrieval efficiency of a solidstate. Oct 23, 2008 the transfer of information between the entities that do the processing and memory is crucial and problematic for quantum computation. Here we report the reversible transfer of photonic polarization states into collective atomic excitation in a compact solidstate device. Yet demonstrations of quantum memory to date fall far short of the performance required for repeaters, and further short of that for quantum computing. P, rareearth ions in solids, and vsicenters in siliconcarbide. Such a memory will be required for most applications of the emerging field of quantum information.
When light is absorbed by atoms, they can input all the information about the quantum of light. Quantum control of single spin excitations in cold atomic quantum. Researchers achieve multifunctional solidstate quantum memory. Pdf solid state spinwave quantum memory for timebin. Researchers achieve multifunctional solidstate quantum. The results presented in this thesis ll an important gap in the eld of solid state quantum memories and open the way for the longlived storage of nonclassical states of. However, lorentzian distributions are found in many solid state systems, e. We also demonstrate the first spinwave storage of timebin qubits with conditional fidelities higher than for classical memories 4. However, the main advantages of solid state platforms are their suitability for miniaturization and. The purpose of this article is to convey the sense of wonder surrounding quantum mechanical tunneling as it is applied to silicon memory devices that are at the heart of the solid state data storage revolution and to put its importance into historical context. Solid state quantum memory the reliable storage and coherent manipulation of quantum states with mattersystems enable the construction of largescale quantum networks based on a quantum repeater. Solidstate quantum memory using the 31p nuclear spin.
The team of li chengfeng, zhou zongquan and others from the cas key lab of quantum information developed a multidegreeoffreedom dof multiplexed solid state quantum memory. Quantum teleportation of the state of a qubit encoded in the polarization state is demonstrated from a telecomwavelength photon to a solid state quantum memory via 24. A tenqubit solidstate spin register with remarkable quantum. The results presented in this thesis fill an important gap in the field of solid state quantum memories and open the way for the longlived storage of nonclassical states of light. Solidstate source of nonclassical photon pairs with.
Quantum correlations between single telecom photons and a. The transfer fidelity is about 84% each way, attributed to imperfect rotations which could be corrected using composite. Storage of hyperentanglement in a solidstate quantum memory article pdf available in optica 24. Two groups of physicists have managed to shift the quantum entanglement between two photons onto an. We achieved this in the course of this thesis, measuring also for the first time and only, at the time of writing nonclassical correlation between a single spin wave in a solid state qm and a telecom photon. Towards the spinwave storage of entangled photons in a solid state quantum memory. Quantum memory is based on the transfer of quantum information from a light pulse to another system, such as an ultracold atomic gas or a warm atomic vapor. The transfer of information between the entities that do the processing and memory is crucial and problematic for quantum computation. Rareearth reiondoped solids have the advantage of broad inhomogeneous absorption, which provides a large memory bandwidth for these solid state quantum memories19, and enables them to be used for temporal multimode operations. Tailored state preparation for solidstate quantum memory.
Many applications of quantum communication crucially depend on reversible transfer of quantum states between light and matter. Sep 21, 2014 quantum teleportation of the state of a qubit encoded in the polarization state is demonstrated from a telecomwavelength photon to a solid state quantum memory via 24. Quantum teleportation is a cornerstone of quantum information science due to its essential role in several important tasks such as the longdistance transmission of quantum information using quantum repeaters. The state is left in the nuclear spin on a time scale long compared with the electron t 2 and then coherently transferred back to the electron spin, thus demonstrating the 31p nuclear spin as a solid state quantum memory. The triumph of quantum mechanics at the heart of solid. A quantum memory is a device to store and recall the quantum state of light. Its successful realization with single photons requires an efficient quantum light source match. A multimode solidstate quantum memory for single photons. A longlived quantum memory is a firm requirement for implementing a quantum repeater scheme. The state is left in the nuclear spin on a timescale that is long compared with the electron decoherence time, and is then coherently transferred back to the electron spin, thus demonstrating the 31 p nuclear spin as a solid state quantum memory. Until the start of my phd there was still no demonstration of storage of a real quantum state of light with an ondemand readout in redcs. Our device consists of a semiconductor spin qubit strongly coupled to a nanophotonic cavity. In this work, we experimentally demonstrate two points.
Rareearth doped crystals are promising for quantum storage applications because they provide a unique system where a large number of atoms with excellent spin and optical coherence properties are naturally trapped in a solid state matrix. Here, we demonstrate the storage of deterministic single photons emitted from a quantum dot in a polarizationmaintaining solid state quantum memory. Solid state quantum information science and technology development of quantum computers is a highly ambitious technological pursuit that can provide dramatic payoff with speedups in tasks of interest to the dod, including the ability to break codes that are fundamentally unbreakable with ordinary computers. The results were published in nature communications recently. Jianming cai 1,2,5, fedor jelezko 2,3, nadav katz 4, alex retzker 1,4 and martin b plenio 1,2. The present thesis is focused on studying new approaches toward practical solid state based quantum memories. A quantum memory for light is a device that reversibly maps the quantum information in a light field to the quantum state of a material system, making possible its recall on demand. A longstanding goal in optics is to produce a solid state alloptical transistor, in which the transmission of light can be controlled by a single photon that acts as a gate or switch. Quantum memory is one such field, mapping the quantum state of light onto a group of. Optimizing the storage and retrieval efficiency of a solid. Tunable solidstate quantum memory using rareearthion. In quantum computing, quantum memory is the quantummechanical version of ordinary. Finally, in the last part of this thesis we demonstrated a solidstate spin wave quantum memory, with qubits encoded in weak coherent states at the single photon. Quantum memory is a key element in information processing, such as optical quantum computing and quantum communication, while opening a new way for the foundation of lightatom interaction.
Quantum optics a singlephoton switch and transistor. Longlived driven solidstate quantum memory iopscience. In classical computing, memory is a trivial resource that can be replicated in longlived memory hardware and retrieved later for further processing. Solidstate memories pave the way to practical quantum communication. Solid state physics is the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy. First, i present a proposal for a new quantum memory protocol called the controllabledipole quantum memory 4. Solidstate quantum memory using the 31 p nuclear spin.
Chinese researchers develop highperformance integrated. Tunable solidstate quantum memory using rareearthiondoped. Realization of reliable solidstate quantum memory for photonic polarization qubit. Solidstate source of nonclassical photon pairs with embedded. Towards the spinwave storage of entangled photons in a solid state. Using the full atomic frequency comb scheme, we store weak coherent pulses at the singlephoton level with a signal to noise ratio 10. Quantum teleportation from a telecomwavelength photon to. The triumph of quantum mechanics at the heart of solidstate. Optimizing the storage and retrieval eciency of a solid state quantum memory through tailored state preparation matthew d. Our results provide a solidstate source of entangled photons with embedded quantum memory. Solidstate quantum memory using the 31 p nuclear spin nature. They include solidstate atomic ensembles, nv centers, quantum dots, single atoms, atomic gases and optical phonons in diamond. Realization of reliable solidstate quantum memory for photonic. Pdf the faithful storage of a quantum bit qubit of light is essential for long distance.
Pdf realization of reliable solidstate quantum memory for. Chinese researchers develop highperformance integrated solid state quantum memory xinhua updated. Focus on quantum memory new journal of physics iopscience. This choice of dofs, combined with the fact that one of the photons of each pair is at a telecom wavelength, makes our source and memory very attractive for the implementation of linearoptical entanglement purification in quantum repeaters. In this the sis, we report experiments with a quantum memory based on cold atoms. Published 17 september 2012 iop publishing and deutsche physikalische gesellschaft new journal of physics, volume 14, september 2012. Our team is working to establish the scientific basis for practical solid state quantum information technologies using the spin states of semiconductor quantum dots qds and defects in solids. Quantum memory is one such field, mapping the quantum state of light onto a group of atoms and then restoring it to its original shape.
In this letter, we report a single photon switch and transistor enabled by a solid state spin qubit coupled to a nanocavity. Quantum teleportation from a telecomwavelength photon to a. Optimizing the storage and retrieval efficiency of a solidstate quantum memory through tailored state preparation. The spin qubit enables a single 63picosecond gate photon to switch a signal field containing up to an average of 27. Solidstate quantum memory for photonic qubits semantic scholar. Pdf longlived driven solidstate quantum memory nadav. Protecting a diamond quantum memory by charge state. Pdf the faithful storage of a quantum bit qubit of light is essential for longdistance. Quantum teleportation from a telecomwavelength photon to a solid state quantum memory abstract. Pdf storage of hyperentanglement in a solidstate quantum.
This experiments also represents the first demonstration of a quantum memory for timebin qubits with on demand readout of the stored quantum information. Chinese researchers develop highperformance integrated solid. Hefei chinese researchers have developed a highfidelity integrated solid state quantum memory, making important progress in the field of quantum storage and laying a solid foundation for developing a quantum network. Pdf solid state spinwave quantum memory for timebin qubits.
Protecting a diamond quantum memory by charge state control. To date, this has not been achieved with an ondemand spinwave solid state quantum memory. Entanglement is established between a rareearthion doped crystal storing a single photon that is polarizationentangled with a flying telecomwavelength photon. By combining the storage process of a quantum memory for photons with fluorescencebased quantum state measurement, it is, in principle, possible to achieve highefficiency photon counting in large ensembles of atoms. Solid state quantum memory using the 31p nuclear spin. Mar, 2008 the electron spin state can be stored in the nuclear spin on a timescale that is long compared with the electron decoherence time and then coherently transferred back to the electron spin, thus demonstrating the 31p nuclear spin as a solid state quantum memory. In this contribution, we report the first solid state spinwave optical quantum memory with ondemand readout. Two photons can simultaneously share entanglement between several degrees of freedom such as polarization, energytime, spatial mode, and orbital angular.