Quantum Entanglement Reading Answers

Aug 1, 2025

Quantum Entanglement Reading Answers contain 14 questions and belong to the assessment system of the IELTS General Reading test. Quantum Entanglement Reading Answers must be answered within 20 minutes. In this IELTS reading section, question types include: Match each statement with the correct part of The Comic Store, Write the correct letter, Do the following statements agree with the information given, and Choose NO MORE THAN THREE WORDS.

Quantum Entanglement Reading Answers offers a comprehensive overview of warm systems like living organisms, quantum entanglement can persist, challenging the idea that quantum effects only exist in tiny, cold environments. To practice similar reading tests, candidates can refer to the IELTS Reading Practice Test section.

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Topic:

A.Wouldn’t it be nice to be an electron? Then you, too, could take advantage of the marvels of quantum mechanics, such as being in two places at once very handy for juggling the competing demands of modern life. Also, physicists have long spoiled the fantasy by saying that quantum mechanics applies only to microscopic things.

B.Yet that is a myth. In the modern view that has gained traction in the past decade, you don’t see quantum effects on everyday life because you are big, but because these effects are camouflaged by their own sheer complexity. They are there if you know how to look, and physicists have been realizing that they show up in the macroscopic world more than they thought. “The standard arguments may be too pessimistic as to the survival of quantum effects,” says Nobel laureate physicist Anthony Leggett of the University of Illinois.

C.In the most distinctive such effect, called entanglement, two electrons establish a kind of telepathic link that transcends space and time. And not just electrons: you too, retain a quantum bond with your loved ones that endures no matter how far apart you may be. If so hopelessly romantic, the flip side is that particles can be incorrigibly promiscuous; hooking up with every other particle they meet. So you also retain a quantum bond with every loser who ever bumped into you on the street and every molecule that ever brushed your skin.

D.To preserve entanglement for use in, say, quantum computers, physicists use all the tactics of a parent trying to control a teenager’s love life, such as isolating the particle from its environment or chaperoning the particle and undoing unwanted entanglements. And they typically have about as much success. But if you can’t beat the environment, why not use it? “The environment can act more positively,” says physicist Vlatko Vedral of the National University of Singapore and the University of Oxford.

E.One approach has been suggested by Jianning Cai and Hans J. Briegel of the Institute for Quantum Optics and Quantum Information in Innsbruck Austria, and Sandu Popescu of the University of Bristol in England. Suppose you have a V-shaped molecule you can open and close like a pair of tweezers. When the molecule closes, two electrons on the tips become entangled. If you must keep them there, the electrons will eventually de-cohere as particles from the environment bump into them and you will have to re-establish entanglement.

F.The answer is to open up the molecule and, counterintuitively, leave the electrons even more exposed to the environment. In this case, the de-coherence resets the electrons back to a default, baseline state, from which you can again align and re-establish entanglement afresh. If you open and close fast enough, it is as though the entanglement was never broken. The team calls this “dynamic entanglement” as opposed to the static kind that endures as long as you can isolate the system from bombardment. The oscillation works, researchers say dynamic entanglement can do everything static sort can.

G.A different approach uses a group of particles that act as one. Because of the group’s internal dynamics, it can have multiple default, or equilibrium, states, corresponding to different energy arrangements. A quantum computer can store data in these equilibrium states rather than in individual particles. This approach, first put forth in 2001 by Alexei Kitaev, then at the Landau Institute for Theoretical Physics in Russia, is known as topological error correction, because it does not require physicists to supervise the system actively. If the group deviates from equilibrium, the environment has the work of pushing it back in line. When the temperature is high, does the environment disrupt rather than stabilize the system? “The environment both adds errors as well as removes them,” says Pawel Horodecki of the University of Gdansk in Poland.

H.The trick is to make sure it removes faster than it adds. Horodecki, Héctor Bombin of the Massachusetts Institute of Technology and colleagues recently devised such a setup, but for geometric reasons, they thread the system with force fields to tilt the balance toward removal. But these systems may not be able to perform general computation and may do ok with ordinary space; instead of relying on height and width, they rely on length and depth.

I.This work suggests that, contrary to conventional wisdom, entanglement can persist in large, warm systems including living organisms. “This opens the door to the possibility that entanglement exists in biology,” says Mohan Sarovar of the University of California, Berkeley, who recently collaborated with experimental and theoretical physicists (see “Chillpower”, Vedral and Moyers; Scientific American, September 2009). In their experiment on entanglement in synthetic molecule and photosynthesis, several teams including Hans Briegel and Martin Rieper, also at Singapore, and colleagues showed that the system can stay coherent for 100 to 1000 times longer than standard forecasts predicted. So although we may never see electrons riding lions, living things can still take advantage of their wonderful quantum effects.

Questions 14-20

READING PASSAGE 2 has nine paragraphs A-l.

Which paragraph contains the following information? Write the correct letter A-l.

NB You may use any paragraph more than once.

14. methods physicists learn from parents' supervising kids

Answer: D

Supporting statement: "Physicists use all the tactics of a parent trying to control a teenager’s love life..."

Keywords: [parent, control, teenager, tactics]

Keyword Location: Paragraph D

Explanation: The comparison is directly made between physicists' techniques and parental supervision, to describe how they attempt to preserve entanglement.

15. two distinctive types of entanglements

Answer: F

Supporting statement: "...‘dynamic entanglement’ as opposed to the static kind..."

Keywords: [dynamic entanglement, static entanglement]

Keyword Location: Paragraph F

Explanation: Paragraph F contrasts dynamic and static entanglement, explaining their functioning and benefits.

16. a particular reason why quantum effects are overlooked

Answer: B

Supporting statement: "...these effects are camouflaged by their own sheer complexity."

Keywords: [quantum effects, overlooked, complexity]

Keyword Location: Paragraph B

Explanation: The paragraph explains that quantum effects are hidden due to their complexity, not their absence.

17. a mention of storing information not in individual particles

Answer: G

Supporting statement: "...store data in these equilibrium states rather than in individual particles."

Keywords: [store data, equilibrium states, not individual particles]

Keyword Location: Paragraph G

Explanation: The paragraph discusses topological error correction and data storage in group states.

18. geometric restrictions of a newly devised approach

Answer: H

Supporting statement: "...for geometric reasons, they thread the system with force fields..."

Keywords: [geometric reasons, force fields]

Keyword Location: Paragraph H

Explanation: The paragraph mentions geometric factors affecting the setup of the system.

19. the fact that heat is an important environmental factor which influences the stability of particles

Answer: G

Supporting statement: "When the temperature is high, does the environment disrupt rather than stabilize the system?"

Keywords: [temperature, environment, stabilize, disrupt]

Keyword Location: Paragraph G

Explanation: The paragraph raises the concern about the destabilizing effect of high temperature on particle systems.

20. details of international collaborations of experts

Answer: I

Supporting statement: "...collaborated with experimental and theoretical physicists... several teams including Hans Briegel and Martin Rieper..."

Keywords: [collaboration, several teams, experts]

Keyword Location: Paragraph I

Explanation: International collaborations in quantum biology and synthetic molecule experiments are discussed.

Questions 21-25

Do the following statements agree with the information given in READING PASSAGE 2? Write

TRUE if the statement agrees with the information

FALSE if the statement contradicts the information

NOT GIVEN if there is no information on this

21. Quantum mechanics are applicable to the present social life.

Answer: FALSE

Supporting statement: "Physicists have long spoiled the fantasy by saying that quantum mechanics applies only to microscopic things."

Keywords: [microscopic, fantasy, spoiled]

Keyword Location: Paragraph A

Explanation: The statement suggests quantum mechanics is not applicable to everyday social life.

22. The efforts to preserve entanglement are not always successful.

Answer: TRUE

Supporting statement: "...and they typically have about as much success [as parents]."

Keywords: [not always successful, comparison to parents]

Keyword Location: Paragraph D

Explanation: The comparison implies efforts often fail, confirming the statement.

23. The electrons in a V-shaped molecule would be separated when they are kept together for a long time.

Answer: TRUE

Supporting statement: "...the electrons will eventually de-cohere as particles from the environment bump into them..."

Keywords: [de-cohere, environment, bump]

Keyword Location: Paragraph E

Explanation: The paragraph explains that environmental interaction causes decoherence if electrons stay together too long.

24. The dynamic entanglement is favoured by the scientists over the static entanglement.

Answer: NOT GIVEN

Explanation: While dynamic entanglement is described positively, there is no direct comparison indicating preference.

25. Too high temperature would have negative effects on the stability of group of particles.

Answer: TRUE

Supporting statement: "When the temperature is high, does the environment disrupt rather than stabilize the system?"

Keywords: [temperature, disrupt, stability]

Keyword Location: Paragraph G

Explanation: The rhetorical question clearly implies that high temperature can destabilize the system.

Questions 26 and 27

Choose NO MORE THAN THREE WORDS.

26. What is the term for the effects entanglement has on itself?

Answer: dynamic entanglement

Supporting statement: “The team calls this ‘dynamic entanglement’ as opposed to the static kind...”

Keywords: [dynamic entanglement, static kind, re-establish]

Keyword Location: Paragraph F, Line 5

Explanation: The passage explains that instead of maintaining entanglement through isolation (static), exposing the electrons periodically to the environment allows them to reset and re-entangle. This process is termed “dynamic entanglement,” describing how entanglement can sustain itself through interaction.

27. What is the name for the approach designed by a Russian institute?

Answer: topological error correction

Supporting statement: “...this approach, first put forth in 2001 by Alexei Kitaev... is known as topological error correction...”

Keywords: [topological error correction, Alexei Kitaev, 2001]

Keyword Location: Paragraph G, Line 4

Explanation: The method developed by Kitaev at the Landau Institute uses groups of particles to encode quantum information in their collective states. It stabilizes the system without constant supervision, thus referred to as "topological error correction."

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