What will we be talking today?

  • Classical Computers: What they cannot do?
  • What are QCs? Why are they disrupting our current views on computation?
  • Quantum Supremacy and what it beholds
  • Qubits and their properties
  • Demo
 

Classical Computers: What they cannot do?

  • Exponential Scaling
  • Optimization problems
  • Chemical Compound Representation/Simulation
  • Security Encryptions 
  • All of these problems have exponential scaling in common
  • This is a major hurdle with our classical computers and supercomputers too

Church-Turing Thesis

  • Accepted rule:  It states that if a problem can be solved by a Turing machine, it can also be solved by a computational device.

 

  • Extension on the Thesis: It states that a Turing machine (like a classical computer) can always efficiently simulate any computational model, even to simulate an inherently quantum computation.
 

Quantum Supremacy and what it beholds

  • Quantum computers could efficiently solve a computation that a classical computer can only solve inefficiently, is known as Quantum Supremacy
 

 

  • Google Quantum Supremacy- What did they do?-News article with technical terms
  • Later-after qubit-Theoretically, if you reach a certain number of efficient qubits, usually said to 56, you can thereby simulate problems that a Classical computers nowhere can

Google Quantum

  • Superconducting Bits
  • Electrical Circuits to generate qubits
  • Sycamore The 54-qubit QC by Google
  • Compared to IBM, they actively release blogs and had a chance to meet one of them

Qubits and their properties

  • Qubits or quantum bits are the fundamental building block for quantum information processes.
  • Whereas conventional computers store and process data as a series of '1's and '0's. Quantum Computers can use Qubits.
 
  • Property of Superposition
  • Property of Entaglement
  •  Quantum Supremacy slide

Property of Superposition

  • At any given time, the qubit can be in a superposition of both 0 and 1
  • Hence you are expanding your information space and this becomes more complex

Property of Entaglement

  •  Quantum State of each particle cannot be described independently of the state of the others, even when the particles are separated by a large distance.
  • So you can judge an adjacent's qubit's property by this qubit

Why do QCs have different rules to play by?

  • Limitations of QCs: Suprise Quantum Computers aren't perfect. 
  • Quantum Error Correction
  • Qubit DeCoherence 

Demo

QC

By archana iyer

QC

  • 600